nix, work on build

26 files changed, 703 insertions, 974 deletions

diff --git a/.gitignore b/.gitignore
index 1236343..3790a8b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,8 +22,8 @@
 !misc
 !misc/**
 !*.nix
-!nixEnv
-!nixEnv/**
+!nix
+!nix/**
 !.envrc
 !src
 !src/**
diff --git a/default.nix b/default.nix
index bf5940a..fa6adad 100755
--- a/default.nix
+++ b/default.nix
@@ -2,14 +2,19 @@
 { pkgs ? import <nixpkgs> {},
   stdenv ? pkgs.stdenv,
 }:
-with import ./mkDub.nix { inherit pkgs; };
+with import ./nix/mkDub.nix { inherit pkgs; };
 mkDubDerivation rec {
   name = "spine-${version}";
   version = "0.11.1";
   src = ./.;
   buildInputs = [
     pkgs.sqlite
+    (import ./nix/shell-packages.nix { inherit pkgs; })
   ];
+  # installPhase = ''
+  #   install -m755 -D spine $out/bin/spine
+  #   echo "built $out/bin/spine"
+  # '';
   meta = with stdenv.lib; {
     homepage = http://sisudoc.org;
     description = "a sisu like document parser";
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..a392048
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,37 @@
+{
+  description = "a sisu like document parser";
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs.url = "/nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs";
+    # pkgs /nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs {}
+    #spine.url = "/grotto-ra/repo/git.repo/projects/project-spine/doc-reform";
+    #spine.url = "./.";
+    d2sqlite3 = {
+      url    = "github:dlang-community/d2sqlite3";
+      flake  = false;
+    };
+    tinyendian = {
+      url    = "github:kiith-sa/tinyendian";
+      flake  = false;
+    };
+    dyaml = {
+      url    = "github:dlang-community/D-YAML";
+      flake  = false;
+    };
+    imageformats = {
+      url    = "github:lgvz/imageformats";
+      flake  = false;
+    };
+    dub2nix-src = {
+      url = "github:lionello/dub2nix";
+      flake  = false;
+    };
+  };
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.simpleFlake {
+    #flake-utils.lib.spine {
+      inherit self nixpkgs;
+      name = "spine";
+      #shell = ./shell.nix;
+    };
+}
diff --git a/makefile b/makefile
index 055ed39..7272559 100644
--- a/makefile
+++ b/makefile
@@ -534,26 +534,7 @@ tangle_maker:
 				(setq-local org-src-preserve-indentation t) \
 			(org-babel-tangle) \
 			(kill-buffer)) '($$ORGFILES)))" 2>&1
-nixsh_dmd_nixpkg:
-	ln -sf nixEnv/shells/shell-dmd-verNix.nix shell.nix; \
-	ln -sf nixEnv/dub/mkDub-dmd.nix mkDub.nix; \
-	ls -la shell.nix mkDub.nix | cut -d " " -f 9-; \
-	nix-shell;
-nixsh_dmd_user:
-	ln -sf nixEnv/shells/shell-dmd-verUser.nix shell.nix; \
-	ln -sf nixEnv/dub/mkDub-dmd.nix mkDub.nix; \
-	ls -la shell.nix mkDub.nix | cut -d " " -f 9-; \
-	nix-shell;
-nixsh_ldc_nixpkg:
-	ln -sf nixEnv/shells/shell-ldc-verNix.nix shell.nix; \
-	ln -sf nixEnv/dub/mkDub-ldc.nix mkDub.nix; \
-	ls -la shell.nix mkDub.nix | cut -d " " -f 9-; \
-	nix-shell;
-nixsh_ldc_user:
-	ln -sf nixEnv/shells/shell-ldc-verUser.nix shell.nix; \
-	ln -sf nixEnv/dub/mkDub-ldc.nix mkDub.nix; \
-	ls -la shell.nix mkDub.nix | cut -d " " -f 9-; \
-	nix-shell;
+
 gitsnapshot: distclean tangle
 	git commit -a
 .PHONY : all build rebuild debug release \
diff --git a/mkDub.nix b/mkDub.nix
deleted file mode 120000
index 254bb41..0000000
--- a/mkDub.nix
+++ /dev/null
@@ -1 +0,0 @@
-nixEnv/dub/mkDub-ldc.nix
\ No newline at end of file
diff --git a/dub.selections.nix b/nix/dub.selections.nix
index 28f9d2e..28f9d2e 100644
--- a/dub.selections.nix
+++ b/nix/dub.selections.nix
diff --git a/nixEnv/nixDevEnv/dub/mkDub-ldc.nix b/nix/mkDub.nix
index a9cbb82..bfcb038 100644
--- a/nixEnv/nixDevEnv/dub/mkDub-ldc.nix
+++ b/nix/mkDub.nix
@@ -57,7 +57,7 @@ in {
     src,
     nativeBuildInputs ? [],
     dubJSON ? src + "/dub.json",
-    selections ? src + "/dub.selections.nix",
+    selections ? src + "/nix/dub.selections.nix",
     deps ? import selections,
     passthru ? {},
     package ? lib.importJSON dubJSON,
diff --git a/nixEnv/nixDevEnv/shells/packages-ldc.nix b/nix/shell-packages.nix
index bcef059..9e40e24 100644
--- a/nixEnv/nixDevEnv/shells/packages-ldc.nix
+++ b/nix/shell-packages.nix
@@ -6,7 +6,8 @@ let
   dub2nix = (import dub2nix-src) { inherit pkgs; };
 in
 with pkgs; [
-  nix
+  nixFlakes
+  dub
   ldc
   sqlite
   nix-prefetch-git
diff --git a/nixEnv/dub/mkDub-dmd.nix b/nixEnv/dub/mkDub-dmd.nix
deleted file mode 100644
index a35f2d5..0000000
--- a/nixEnv/dub/mkDub-dmd.nix
+++ /dev/null
@@ -1,121 +0,0 @@
-{ pkgs ? import <nixpkgs> {},
-  stdenv ? pkgs.stdenv,
-  rdmd ? pkgs.rdmd,
-  dmd ? pkgs.dmd,
-  dub ? pkgs.dub }:
-
-with stdenv;
-let
-  # Filter function to remove the .dub package folder from src
-  filterDub = name: type: let baseName = baseNameOf (toString name); in ! (
-    type == "directory" && baseName == ".dub"
-  );
-
-  # Convert a GIT rev string (tag) to a simple semver version
-  rev-to-version = builtins.replaceStrings ["v" "refs/tags/v"] ["" ""];
-
-  dep2src = dubDep: pkgs.fetchgit { inherit (dubDep.fetch) url rev sha256 fetchSubmodules; };
-
-  # Fetch a dependency (source only for now)
-  fromDub = dubDep: mkDerivation rec {
-    name = "${src.name}-${version}";
-    version = rev-to-version dubDep.fetch.rev;
-    nativeBuildInputs = [ rdmd dmd dub ];
-    src = dep2src dubDep;
-
-    buildPhase = ''
-      runHook preBuild
-      export HOME=$PWD
-      dub build -b=release
-      runHook postBuild
-    '';
-
-    # outputs = [ "lib" ];
-
-    # installPhase = ''
-    #   runHook preInstall
-    #   mkdir -p $out/bin
-    #   runHook postInstall
-    # '';
-  };
-
-  # Adds a local package directory (e.g. a git repository) to Dub
-  dub-add-local = dubDep: "dub add-local ${(fromDub dubDep).src.outPath} ${rev-to-version dubDep.fetch.rev}";
-
-  # The target output of the Dub package
-  targetOf = package: "${package.targetPath or "."}/${package.targetName or package.name}";
-
-  # Remove reference to build tools and library sources
-  disallowedReferences = deps: [ dmd rdmd dub ] ++ builtins.map dep2src deps;
-
-  removeExpr = refs: ''remove-references-to ${lib.concatMapStrings (ref: " -t ${ref}") refs}'';
-
-in {
-  inherit fromDub;
-
-  mkDubDerivation = lib.makeOverridable ({
-    src,
-    nativeBuildInputs ? [],
-    dubJSON ? src + "/dub.json",
-    selections ? src + "/dub.selections.nix",
-    deps ? import selections,
-    passthru ? {},
-    package ? lib.importJSON dubJSON,
-    ...
-  } @ attrs: stdenv.mkDerivation (attrs // {
-
-    pname = package.name;
-
-    nativeBuildInputs = [ rdmd dmd dub pkgs.removeReferencesTo ] ++ nativeBuildInputs;
-    disallowedReferences = disallowedReferences deps;
-
-    passthru = passthru // {
-      inherit dub dmd rdmd pkgs;
-    };
-
-    src = lib.cleanSourceWith {
-      filter = filterDub;
-      src = lib.cleanSource src;
-    };
-
-    preFixup = ''
-      find $out/bin -type f -exec ${removeExpr (disallowedReferences deps)} '{}' + || true
-    '';
-
-    buildPhase = ''
-      runHook preBuild
-
-      export HOME=$PWD
-      ${lib.concatMapStringsSep "\n" dub-add-local deps}
-      dub build --build=release --combined --skip-registry=all
-
-      runHook postBuild
-    '';
-
-    checkPhase = ''
-      runHook preCheck
-
-      export HOME=$PWD
-      ${lib.concatMapStringsSep "\n" dub-add-local deps}
-      dub test --combined --skip-registry=all
-
-      runHook postCheck
-    '';
-
-    installPhase = ''
-      runHook preInstall
-
-      mkdir -p $out/bin
-      cp -r "${targetOf package}" $out/bin
-
-      runHook postInstall
-    '';
-
-    meta = lib.optionalAttrs (package ? description) {
-      description = package.description;
-    } // attrs.meta or {};
-  } // lib.optionalAttrs (!(attrs ? version)) {
-    # Use name from dub.json, unless pname and version are specified
-    name = package.name;
-  }));
-}
diff --git a/nixEnv/dub/mkDub-ldc.nix b/nixEnv/dub/mkDub-ldc.nix
deleted file mode 100644
index a9cbb82..0000000
--- a/nixEnv/dub/mkDub-ldc.nix
+++ /dev/null
@@ -1,121 +0,0 @@
-{ pkgs ? import <nixpkgs> {},
-  stdenv ? pkgs.stdenv,
-  ldc ? pkgs.ldc,
-  dub ? pkgs.dub
-}:
-
-with stdenv;
-let
-  # Filter function to remove the .dub package folder from src
-  filterDub = name: type: let baseName = baseNameOf (toString name); in ! (
-    type == "directory" && baseName == ".dub"
-  );
-
-  # Convert a GIT rev string (tag) to a simple semver version
-  rev-to-version = builtins.replaceStrings ["v" "refs/tags/v"] ["" ""];
-
-  dep2src = dubDep: pkgs.fetchgit { inherit (dubDep.fetch) url rev sha256 fetchSubmodules; };
-
-  # Fetch a dependency (source only for now)
-  fromDub = dubDep: mkDerivation rec {
-    name = "${src.name}-${version}";
-    version = rev-to-version dubDep.fetch.rev;
-    nativeBuildInputs = [ ldc dub ];
-    src = dep2src dubDep;
-
-    buildPhase = ''
-      runHook preBuild
-      export HOME=$PWD
-      dub build -b=release
-      runHook postBuild
-    '';
-
-    # outputs = [ "lib" ];
-
-    # installPhase = ''
-    #   runHook preInstall
-    #   mkdir -p $out/bin
-    #   runHook postInstall
-    # '';
-  };
-
-  # Adds a local package directory (e.g. a git repository) to Dub
-  dub-add-local = dubDep: "dub add-local ${(fromDub dubDep).src.outPath} ${rev-to-version dubDep.fetch.rev}";
-
-  # The target output of the Dub package
-  targetOf = package: "${package.targetPath or "."}/${package.targetName or package.name}";
-
-  # Remove reference to build tools and library sources
-  disallowedReferences = deps: [ ldc dub ] ++ builtins.map dep2src deps;
-
-  removeExpr = refs: ''remove-references-to ${lib.concatMapStrings (ref: " -t ${ref}") refs}'';
-
-in {
-  inherit fromDub;
-
-  mkDubDerivation = lib.makeOverridable ({
-    src,
-    nativeBuildInputs ? [],
-    dubJSON ? src + "/dub.json",
-    selections ? src + "/dub.selections.nix",
-    deps ? import selections,
-    passthru ? {},
-    package ? lib.importJSON dubJSON,
-    ...
-  } @ attrs: stdenv.mkDerivation (attrs // {
-
-    pname = package.name;
-
-    nativeBuildInputs = [ ldc dub pkgs.removeReferencesTo ] ++ nativeBuildInputs;
-    disallowedReferences = disallowedReferences deps;
-
-    passthru = passthru // {
-      inherit dub ldc pkgs;
-    };
-
-    src = lib.cleanSourceWith {
-      filter = filterDub;
-      src = lib.cleanSource src;
-    };
-
-    preFixup = ''
-      find $out/bin -type f -exec ${removeExpr (disallowedReferences deps)} '{}' + || true
-    '';
-
-    buildPhase = ''
-      runHook preBuild
-
-      export HOME=$PWD
-      ${lib.concatMapStringsSep "\n" dub-add-local deps}
-      dub build --compiler=ldc2 --build=release --combined --skip-registry=all
-
-      runHook postBuild
-    '';
-
-    checkPhase = ''
-      runHook preCheck
-
-      export HOME=$PWD
-      ${lib.concatMapStringsSep "\n" dub-add-local deps}
-      dub test --combined --skip-registry=all
-
-      runHook postCheck
-    '';
-
-    installPhase = ''
-      runHook preInstall
-
-      mkdir -p $out/bin
-      cp -r "${targetOf package}" $out/bin
-
-      runHook postInstall
-    '';
-
-    meta = lib.optionalAttrs (package ? description) {
-      description = package.description;
-    } // attrs.meta or {};
-  } // lib.optionalAttrs (!(attrs ? version)) {
-    # Use name from dub.json, unless pname and version are specified
-    name = package.name;
-  }));
-}
diff --git a/nixEnv/nixDevEnv/dub/mkDub-dmd.nix b/nixEnv/nixDevEnv/dub/mkDub-dmd.nix
deleted file mode 100644
index a35f2d5..0000000
--- a/nixEnv/nixDevEnv/dub/mkDub-dmd.nix
+++ /dev/null
@@ -1,121 +0,0 @@
-{ pkgs ? import <nixpkgs> {},
-  stdenv ? pkgs.stdenv,
-  rdmd ? pkgs.rdmd,
-  dmd ? pkgs.dmd,
-  dub ? pkgs.dub }:
-
-with stdenv;
-let
-  # Filter function to remove the .dub package folder from src
-  filterDub = name: type: let baseName = baseNameOf (toString name); in ! (
-    type == "directory" && baseName == ".dub"
-  );
-
-  # Convert a GIT rev string (tag) to a simple semver version
-  rev-to-version = builtins.replaceStrings ["v" "refs/tags/v"] ["" ""];
-
-  dep2src = dubDep: pkgs.fetchgit { inherit (dubDep.fetch) url rev sha256 fetchSubmodules; };
-
-  # Fetch a dependency (source only for now)
-  fromDub = dubDep: mkDerivation rec {
-    name = "${src.name}-${version}";
-    version = rev-to-version dubDep.fetch.rev;
-    nativeBuildInputs = [ rdmd dmd dub ];
-    src = dep2src dubDep;
-
-    buildPhase = ''
-      runHook preBuild
-      export HOME=$PWD
-      dub build -b=release
-      runHook postBuild
-    '';
-
-    # outputs = [ "lib" ];
-
-    # installPhase = ''
-    #   runHook preInstall
-    #   mkdir -p $out/bin
-    #   runHook postInstall
-    # '';
-  };
-
-  # Adds a local package directory (e.g. a git repository) to Dub
-  dub-add-local = dubDep: "dub add-local ${(fromDub dubDep).src.outPath} ${rev-to-version dubDep.fetch.rev}";
-
-  # The target output of the Dub package
-  targetOf = package: "${package.targetPath or "."}/${package.targetName or package.name}";
-
-  # Remove reference to build tools and library sources
-  disallowedReferences = deps: [ dmd rdmd dub ] ++ builtins.map dep2src deps;
-
-  removeExpr = refs: ''remove-references-to ${lib.concatMapStrings (ref: " -t ${ref}") refs}'';
-
-in {
-  inherit fromDub;
-
-  mkDubDerivation = lib.makeOverridable ({
-    src,
-    nativeBuildInputs ? [],
-    dubJSON ? src + "/dub.json",
-    selections ? src + "/dub.selections.nix",
-    deps ? import selections,
-    passthru ? {},
-    package ? lib.importJSON dubJSON,
-    ...
-  } @ attrs: stdenv.mkDerivation (attrs // {
-
-    pname = package.name;
-
-    nativeBuildInputs = [ rdmd dmd dub pkgs.removeReferencesTo ] ++ nativeBuildInputs;
-    disallowedReferences = disallowedReferences deps;
-
-    passthru = passthru // {
-      inherit dub dmd rdmd pkgs;
-    };
-
-    src = lib.cleanSourceWith {
-      filter = filterDub;
-      src = lib.cleanSource src;
-    };
-
-    preFixup = ''
-      find $out/bin -type f -exec ${removeExpr (disallowedReferences deps)} '{}' + || true
-    '';
-
-    buildPhase = ''
-      runHook preBuild
-
-      export HOME=$PWD
-      ${lib.concatMapStringsSep "\n" dub-add-local deps}
-      dub build --build=release --combined --skip-registry=all
-
-      runHook postBuild
-    '';
-
-    checkPhase = ''
-      runHook preCheck
-
-      export HOME=$PWD
-      ${lib.concatMapStringsSep "\n" dub-add-local deps}
-      dub test --combined --skip-registry=all
-
-      runHook postCheck
-    '';
-
-    installPhase = ''
-      runHook preInstall
-
-      mkdir -p $out/bin
-      cp -r "${targetOf package}" $out/bin
-
-      runHook postInstall
-    '';
-
-    meta = lib.optionalAttrs (package ? description) {
-      description = package.description;
-    } // attrs.meta or {};
-  } // lib.optionalAttrs (!(attrs ? version)) {
-    # Use name from dub.json, unless pname and version are specified
-    name = package.name;
-  }));
-}
diff --git a/nixEnv/nixDevEnv/overlays/ldcVersion.nix b/nixEnv/nixDevEnv/overlays/ldcVersion.nix
deleted file mode 100644
index 5bc7f7a..0000000
--- a/nixEnv/nixDevEnv/overlays/ldcVersion.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-self: super: rec {
-  ldc = super.ldc.overrideAttrs(oldAttrs: rec {
-    pname   = "ldc";
-    version = "1.24.0";
-    sha256  = "0g5svf55i0kq55q49awmwqj9qi1n907cyrn1vjdjgs8nx6nn35gx";
-    name = "${pname}-${version}";
-    src = super.fetchurl {
-      url = "https://github.com/ldc-developers/ldc/releases/download/v${version}/ldc-${version}-src.tar.gz";
-      sha256 = sha256;
-    };
-    postUnpack = ''
-      patchShebangs .
-    '';
-  });
-}
diff --git a/nixEnv/nixDevEnv/shells/shell-dmd-verNix.nix b/nixEnv/nixDevEnv/shells/shell-dmd-verNix.nix
deleted file mode 100644
index 7f16efe..0000000
--- a/nixEnv/nixDevEnv/shells/shell-dmd-verNix.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{ pkgs ? import <nixpkgs> {} }:
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    nix
-    dub
-    dmd
-    rdmd
-    sqlite
-    dub2nix
-    nix-prefetch-git
-  ];
-}
diff --git a/nixEnv/nixDevEnv/shells/shell-dmd-verUser.nix b/nixEnv/nixDevEnv/shells/shell-dmd-verUser.nix
deleted file mode 100644
index 334aece..0000000
--- a/nixEnv/nixDevEnv/shells/shell-dmd-verUser.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ pkgs ? import <nixpkgs>
-  { overlays = [ ]; }
-}:
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    nix
-    dub
-    dmd
-    rdmd
-    sqlite
-    dub2nix
-    nix-prefetch-git
-  ];
-}
diff --git a/nixEnv/nixDevEnv/shells/shell-ldc-verNix.nix b/nixEnv/nixDevEnv/shells/shell-ldc-verNix.nix
deleted file mode 100644
index 0a6aa9a..0000000
--- a/nixEnv/nixDevEnv/shells/shell-ldc-verNix.nix
+++ /dev/null
@@ -1,5 +0,0 @@
-{ pkgs ? import <nixpkgs> {} }:
-pkgs.mkShell {
-  buildInputs = with pkgs;
-  [ (import ./packages-ldc.nix { inherit pkgs; }) ];
-}
diff --git a/nixEnv/nixDevEnv/shells/shell-ldc-verUser.nix b/nixEnv/nixDevEnv/shells/shell-ldc-verUser.nix
deleted file mode 100644
index 1c9c092..0000000
--- a/nixEnv/nixDevEnv/shells/shell-ldc-verUser.nix
+++ /dev/null
@@ -1,7 +0,0 @@
-{ pkgs ? import <nixpkgs> {
-  overlays = [ (import ../overlays/ldcVersion.nix) ];
-} }:
-pkgs.mkShell {
-  buildInputs = with pkgs;
-  [ (import ./packages-ldc.nix { inherit pkgs; }) ];
-}
diff --git a/nixEnv/overlays/ldcVersion.nix b/nixEnv/overlays/ldcVersion.nix
deleted file mode 100644
index 5bc7f7a..0000000
--- a/nixEnv/overlays/ldcVersion.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-self: super: rec {
-  ldc = super.ldc.overrideAttrs(oldAttrs: rec {
-    pname   = "ldc";
-    version = "1.24.0";
-    sha256  = "0g5svf55i0kq55q49awmwqj9qi1n907cyrn1vjdjgs8nx6nn35gx";
-    name = "${pname}-${version}";
-    src = super.fetchurl {
-      url = "https://github.com/ldc-developers/ldc/releases/download/v${version}/ldc-${version}-src.tar.gz";
-      sha256 = sha256;
-    };
-    postUnpack = ''
-      patchShebangs .
-    '';
-  });
-}
diff --git a/nixEnv/shells/packages-ldc.nix b/nixEnv/shells/packages-ldc.nix
deleted file mode 100644
index bcef059..0000000
--- a/nixEnv/shells/packages-ldc.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ pkgs ? import <nixpkgs> {} }:
-let
-  dub2nix-src = fetchTarball {
-    url = "https://github.com/lionello/dub2nix/archive/master.tar.gz";
-  };
-  dub2nix = (import dub2nix-src) { inherit pkgs; };
-in
-with pkgs; [
-  nix
-  ldc
-  sqlite
-  nix-prefetch-git
-  validatePkgConfig
-]
diff --git a/nixEnv/shells/shell-dmd-verNix.nix b/nixEnv/shells/shell-dmd-verNix.nix
deleted file mode 100755
index cac08f4..0000000
--- a/nixEnv/shells/shell-dmd-verNix.nix
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/env -S nix-shell
-{ pkgs ? import <nixpkgs> {} }:
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    nix
-    dub
-    dmd
-    rdmd
-    sqlite
-    dub2nix
-    nix-prefetch-git
-  ];
-}
diff --git a/nixEnv/shells/shell-dmd-verUser.nix b/nixEnv/shells/shell-dmd-verUser.nix
deleted file mode 100755
index 4e40c0b..0000000
--- a/nixEnv/shells/shell-dmd-verUser.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/usr/bin/env -S nix-shell
-{ pkgs ? import <nixpkgs>
-  { overlays = [ ]; }
-}:
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    nix
-    dub
-    dmd
-    rdmd
-    sqlite
-    dub2nix
-    nix-prefetch-git
-  ];
-}
diff --git a/nixEnv/shells/shell-ldc-verNix.nix b/nixEnv/shells/shell-ldc-verNix.nix
deleted file mode 100755
index 748f553..0000000
--- a/nixEnv/shells/shell-ldc-verNix.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/usr/bin/env -S nix-shell
-{ pkgs ? import <nixpkgs> {} }:
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    (import ./packages-ldc.nix { inherit pkgs; })
-  ];
-  shellHook = ''
-    # nix-build
-    ## nix-build -I nixpkgs=<provide local nix path>
-    ## nix-build -I nixpkgs=/nixpkgs-ra/nixpkgs
-  '';
-}
diff --git a/nixEnv/shells/shell-ldc-verUser.nix b/nixEnv/shells/shell-ldc-verUser.nix
deleted file mode 100755
index d7f3267..0000000
--- a/nixEnv/shells/shell-ldc-verUser.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-#!/usr/bin/env -S nix-shell
-{ pkgs ? import <nixpkgs> {
-  overlays = [ (import ../overlays/ldcVersion.nix) ];
-} }:
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    (import ./packages-ldc.nix { inherit pkgs; })
-  ];
-  shellHook = ''
-    # nix-build
-    ## nix-build -I nixpkgs=<provide local nix path>
-    ## nix-build -I nixpkgs=/nixpkgs-ra/nixpkgs
-  '';
-}
diff --git a/org/spine_build_scaffold.org b/org/spine_build_scaffold.org
index dd043e2..e06bbc6 100644
--- a/org/spine_build_scaffold.org
+++ b/org/spine_build_scaffold.org
@@ -999,30 +999,6 @@ tangle_maker:
 			(kill-buffer)) '($$ORGFILES)))" 2>&1
 #+END_SRC
 
-#+NAME: make_nix_project_shell
-#+BEGIN_SRC makefile
-nixsh_dmd_nixpkg:
-	ln -sf nixEnv/shells/shell-dmd-verNix.nix shell.nix; \
-	ln -sf nixEnv/dub/mkDub-dmd.nix mkDub.nix; \
-	ls -la shell.nix mkDub.nix | cut -d " " -f 9-; \
-	nix-shell;
-nixsh_dmd_user:
-	ln -sf nixEnv/shells/shell-dmd-verUser.nix shell.nix; \
-	ln -sf nixEnv/dub/mkDub-dmd.nix mkDub.nix; \
-	ls -la shell.nix mkDub.nix | cut -d " " -f 9-; \
-	nix-shell;
-nixsh_ldc_nixpkg:
-	ln -sf nixEnv/shells/shell-ldc-verNix.nix shell.nix; \
-	ln -sf nixEnv/dub/mkDub-ldc.nix mkDub.nix; \
-	ls -la shell.nix mkDub.nix | cut -d " " -f 9-; \
-	nix-shell;
-nixsh_ldc_user:
-	ln -sf nixEnv/shells/shell-ldc-verUser.nix shell.nix; \
-	ln -sf nixEnv/dub/mkDub-ldc.nix mkDub.nix; \
-	ls -la shell.nix mkDub.nix | cut -d " " -f 9-; \
-	nix-shell;
-#+END_SRC
-
 *** git snapshot
 
 #+NAME: make_git_snapshot
@@ -1045,7 +1021,7 @@ gitsnapshot: distclean tangle
 #+BEGIN_SRC json  :NO-tangle ../dub.settings.json
 {
   "defaultArchitecture": "x86_64",
-  "defaultCompiler": "ldc"
+  "defaultCompiler":     "ldc"
 }
 #+END_SRC
 
@@ -1163,7 +1139,7 @@ gitsnapshot: distclean tangle
 }
 #+END_SRC
 
-* dub.sdl :dub:config:sdl:
+* dub.sdl REFERENCE :dub:config:sdl:
 Every DUB package should contain a [[http://code.dlang.org/package-format?lang=json][dub.json]] (or [[http://code.dlang.org/package-format?lang=sdl][dub.sdl]])
 
 not configured here using dub.json for the moment
@@ -1183,11 +1159,11 @@ stringImportPaths   "./views"
 buildRequirements   "allowWarnings"
 targetType          "executable"
 platforms           "posix"
-dependency          "d2sqlite3"      version="~><<version_d2sqlite3>>"      # https://code.dlang.org/packages/d2sqlite3     http://biozic.github.io/d2sqlite3/d2sqlite3
+dependency          "d2sqlite3"      version="~><<version_d2sqlite3>>"     # https://code.dlang.org/packages/d2sqlite3     http://biozic.github.io/d2sqlite3/d2sqlite3
   subconfiguration  "d2sqlite3"      "all-included"
-dependency          "imageformats"   version="~><<version_imageformats>>"       # https://code.dlang.org/packages/imageformats  https://github.com/lgvz/imageformats
-dependency          "dyaml"          version="~><<version_dyaml>>"       # https://code.dlang.org/packages/dyaml         https://github.com/dlang-community/D-YAML
-dependency          "tinyendian"     version="~><<version_tinyendian>>"       # http://code.dlang.org/packages/tinyendian     https://github.com/dlang-community/tinyendian // dyaml dependency
+dependency          "imageformats"   version="~><<version_imageformats>>"  # https://code.dlang.org/packages/imageformats  https://github.com/lgvz/imageformats
+dependency          "dyaml"          version="~><<version_dyaml>>"         # https://code.dlang.org/packages/dyaml         https://github.com/dlang-community/D-YAML
+dependency          "tinyendian"     version="~><<version_tinyendian>>"    # http://code.dlang.org/packages/tinyendian     https://github.com/dlang-community/tinyendian // dyaml dependency
 #+END_SRC
 
 ** default
@@ -1311,7 +1287,7 @@ configuration "build" {
 }
 #+END_SRC
 
-* meson :meson:build:
+* meson REVISIT :meson:build:
 ** notes
 
 http://mesonbuild.com/D.html
@@ -1722,20 +1698,6 @@ tinyendian_dep = declare_dependency(
 
 - see shell.nix minimal content:
 
-#+BEGIN_SRC nix :NO-tangle shell.nix
-with import <nixpkgs> {};
-let
-  dub2nix-src = fetchTarball {
-    url = "https://github.com/lionello/dub2nix/archive/master.tar.gz";
-  };
-  dub2nix = (import dub2nix-src) { inherit pkgs; };
-in mkShell {
-  buildInputs = [
-    dub dmd rdmd sqlite dub2nix nix-prefetch-git
-  ];
-}
-#+END_SRC
-
 - run: nix-shell
 
 - run: dub init
@@ -1743,7 +1705,7 @@ in mkShell {
 - add d2sqlite3 dependency (provide as dependency during “dub init” or add it to
   the dub.json manually)
 
-#+BEGIN_SRC json :NO-tangle dub.json
+#+BEGIN_SRC json :NO-tangle ../dub.json
 {
   "authors": [
     "Ralph Amissah"
@@ -1791,6 +1753,7 @@ make modificatons if desired
        nix-build -I nixpkgs=[path-to]/nixpkgs
 
 ** envrc :envrc:
+*** .envrc
 
 #+BEGIN_SRC nix :tangle ../.envrc
 if type lorri &>/dev/null; then
@@ -1808,231 +1771,259 @@ if [ -e .envrc-local ]; then
 fi
 #+END_SRC
 
-** shells shell.nix SELECT :shell:
-
-  nix-shell
-  nix-shell --pure -I nixpkgs=/nixpkgs-ra/nixpkgs
-   nix-shell --pure -p "with import /nixpkgs-ra/nixpkgs {}; ldc"
-
-*** dmd shell :dmd:
+- enable flakes
 
-- ln -sf nixEnv/shells/shell-dmd-verNix.nix shell.nix
-- ln -sf nixEnv/shells/shell-dmd-verUser.nix shell.nix
-
-- ln -sf nixEnv/dub/mkDub-dmd.nix mkDub.nix
-
-**** nixpkg
-
-- ln -sf nixEnv/shells/shell-dmd-verNix.nix shell.nix
-- ln -sf nixEnv/dub/mkDub-dmd.nix mkDub.nix
-
-#+BEGIN_SRC nix :tangle ../nixEnv/shells/shell-dmd-verNix.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-shell"
-{ pkgs ? import <nixpkgs> {} }:
-<<nix_shell_mkshell_with_buildInputs_dmd>>
+#+BEGIN_SRC nix :NO-tangle ../.envrc
+if [ -f flake.lock ] && [ -f flake.nix ]; then
+    # reload when these files change
+    watch_file flake.nix
+    watch_file flake.lock
+    # load the flake devShell
+    if [ ! -d $(direnv_layout_dir) ]; then
+        mkdir $(direnv_layout_dir)
+    fi
+    eval "$(nix --experimental-features 'nix-command flakes' print-dev-env --profile "$(direnv_layout_dir)/flake-profile")"
+else
+    # fall back to using direnv's builtin nix support
+    # to prevent bootstrapping problems.
+  #  use nix
+  if type lorri &>/dev/null; then
+      echo "direnv: using lorri from PATH ($(type -p lorri))"
+      eval "$(lorri direnv)"
+  else
+      # fall back to using direnv's builtin nix support
+      # to prevent bootstrapping problems.
+      use nix
+      NIX_ENFORCE_PURITY=0
+  fi
+  # source an additional user-specific .envrc in ./.envrc-local
+  if [ -e .envrc-local ]; then
+     source .envrc-local
+  fi
+fi
 #+END_SRC
 
-**** user
+*** .envrc-local CHECK MODIFY
 
-- ln -sf nixEnv/shells/shell-dmd-verUser.nix shell.nix
-- ln -sf nixEnv/dub/mkDub-dmd.nix mkDub.nix
+- bespoke modify appropriately and generate if needed
 
-#+BEGIN_SRC nix :tangle ../nixEnv/shells/shell-dmd-verUser.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-shell"
-<<nix_shell_overlay_user_version_dmd>>
-<<nix_shell_mkshell_with_buildInputs_dmd>>
+#+BEGIN_SRC nix :NO-tangle ../.envrc-local
+export NIX_PATH=nixpkgs=<<nixpkgs_path>>
+nix-instantiate --find-file nixpkgs
 #+END_SRC
 
-*** ldc shell :ldc:
-
-- ln -sf nixEnv/shells/shell-ldc-verNix.nix shell.nix
-- ln -sf nixEnv/shells/shell-ldc-verUser.nix shell.nix
-
-- ln -sf nixEnv/dub/mkDub-ldc.nix mkDub.nix
-
-**** nixpkg
-
-- ln -sf nixEnv/shells/shell-ldc-verNix.nix shell.nix
-- ln -sf nixEnv/dub/mkDub-ldc.nix mkDub.nix
+**** nixpkgs_path SETUP
+***** nixpkgs select path SELECT
 
-#+BEGIN_SRC nix :tangle ../nixEnv/shells/shell-ldc-verNix.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-shell"
-{ pkgs ? import <nixpkgs> {} }:
-<<nix_shell_mkshell_with_buildInputs_ldc>>
+#+NAME: nixpkgs_path
+#+BEGIN_SRC nix
+<<nixpkgs_path_default>>
 #+END_SRC
 
-**** user
+***** nixpkgs path options
 
-- ln -sf nixEnv/shells/shell-ldc-verUser.nix shell.nix
-- ln -sf nixEnv/dub/mkDub-ldc.nix mkDub.nix
+- <nixpkgs>
 
-#+BEGIN_SRC nix :tangle ../nixEnv/shells/shell-ldc-verUser.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-shell"
-<<nix_shell_overlay_user_version_ldc>>
-<<nix_shell_mkshell_with_buildInputs_ldc>>
+#+NAME: nixpkgs_path_default
+#+BEGIN_SRC nix
+<nixpkgs>
 #+END_SRC
 
-***** (import ./nixEnv/overlays/ldcVersion.nix)
+- local path
 
-#+NAME: nix_shell_overlay_user_version_ldc
+#+NAME: nixpkgs_path_local
 #+BEGIN_SRC nix
-{ pkgs ? import <nixpkgs> {
-  overlays = [ (import ../overlays/ldcVersion.nix) ];
-} }:
+/nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs
 #+END_SRC
 
-**** mkShell with build inputs
+** flake :flake:
 
-#+NAME: nix_shell_mkshell_with_buildInputs_ldc
-#+BEGIN_SRC nix
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    (import ./packages-ldc.nix { inherit pkgs; })
-  ];
-  shellHook = ''
-    # nix-build
-    ## nix-build -I nixpkgs=<provide local nix path>
-    ## nix-build -I nixpkgs=/nixpkgs-ra/nixpkgs
-  '';
-}
-#+END_SRC
+- flake.nix
+    /nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs
+    ./shell.nix
+  - shell.nix
+      ./shell-packages.nix
+    - shell-packages.nix
+  - default.nix
+      ./nix/mkDub.nix
+    - mkdub.nix
+       ./nix/dub.selections.nix
+    - dub.selections.nix
 
-- overlay header
+nix develop
 
-*** parts
-**** dub2nix
+#+BEGIN_SRC nix :tangle ../flake.nix
+{
+  description = "a sisu like document parser";
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs.url = "/nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs";
+    # pkgs /nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs {}
+    #spine.url = "/grotto-ra/repo/git.repo/projects/project-spine/doc-reform";
+    #spine.url = "./.";
+    d2sqlite3 = {
+      url    = "github:dlang-community/d2sqlite3";
+      flake  = false;
+    };
+    tinyendian = {
+      url    = "github:kiith-sa/tinyendian";
+      flake  = false;
+    };
+    dyaml = {
+      url    = "github:dlang-community/D-YAML";
+      flake  = false;
+    };
+    imageformats = {
+      url    = "github:lgvz/imageformats";
+      flake  = false;
+    };
+    dub2nix-src = {
+      url = "github:lionello/dub2nix";
+      flake  = false;
+    };
+  };
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.simpleFlake {
+    #flake-utils.lib.spine {
+      inherit self nixpkgs;
+      name = "spine";
+      #shell = ./shell.nix;
+    };
+}
+#+END_SRC
 
-#+NAME: nix_shell_dub2nix
-#+BEGIN_SRC nix
-dub2nix-src = fetchTarball {
-  url = "https://github.com/lionello/dub2nix/archive/master.tar.gz";
-};
-dub2nix = (import dub2nix-src) { inherit pkgs; };
+#+BEGIN_SRC nix :NO-tangle ../flake.nix
+{
+  description = "a sisu like document parser";
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    nixpkgs.url = "/nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs";
+    # pkgs /nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs {}
+    #spine.url = "/grotto-ra/repo/git.repo/projects/project-spine/doc-reform";
+    #spine.url = "./.";
+  };
+  outputs = { self, nixpkgs, flake-utils }:
+    #flake-utils.lib.eachSystem [ "x86_64-linux" "defaultPackage.x86_64-linux" "packages.x86_64-linux.defaultPackage.x86_64-linux" ] (system:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        #pkgs = ${system};
+        pkgs = nixpkgs.legacyPackages.${system};
+        # project = pkgs.spine.project' {
+        #   src = ./.;
+        #   compiler-nix-name = "ldc";
+        # };
+      in { #project.flake {} // {
+        #devShell = project.shellFor {
+        #  (import ./shell.nix self { inherit pkgs; });
+        #};
+        devShell = import ./default.nix self { inherit pkgs; };
+      }
+    );
+}
 #+END_SRC
 
-**** overlays :overlays:
+** shell.nix :shell:
 
-#+NAME: nix_shell_overlay_none
-#+BEGIN_SRC nix
-{ overlays = [ ]; }
-#+END_SRC
+  nix-shell
 
-***** (import ./nixEnv/overlays/dmdVersion.nix)
+  shell.nix --pure
+  shell.nix --pure -I .envrc
 
-no working overlay, default none:
+  nix-shell --pure -I nixpkgs=/nixpkgs-ra/nixpkgs
+  nix-shell --pure -p "with import /nixpkgs-ra/nixpkgs {}; ldc"
+  nix-shell --pure -p "with import /nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs {}; [dub ldc]"
 
-#+NAME: nix_shell_overlay_user_version_dmd
-#+BEGIN_SRC nix
-{ pkgs ? import <nixpkgs>
-  { overlays = [ ]; }
-}:
-#+END_SRC
+  shell.nix direnv: export +IN_NIX_SHELL
 
-use if working overlay:
+  nix-shell -p nixFlakes
+  nix-shell -p nixFlakes --pure
+  nix-shell -p nixFlakes --pure -p "with import /nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs {}; [dub ldc]"
 
-#+BEGIN_SRC nix
-{ overlays = [
-  (import ../overlays/dmdVersion.nix)
-]; }
-#+END_SRC
+  shell.nix -I .envrc
+  shell.nix
 
-**** build inputs
+  nix-build
+  nix-build -I nixpkgs=<provide local nix path>
+  nix-build -I .envrc
 
-#+NAME: nix_shell_mkshell_with_buildInputs_dmd
-#+BEGIN_SRC nix
+#+BEGIN_SRC nix :tangle ../shell.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-shell"
+{ pkgs ? import <nixpkgs> {} }:
 pkgs.mkShell {
   buildInputs = with pkgs; [
-    nix
-    dub
-    dmd
-    rdmd
-    sqlite
-    dub2nix
-    nix-prefetch-git
+    (import ./nix/shell-packages.nix { inherit pkgs; })
   ];
+  shellHook = ''
+    nix-build
+    echo "built spine @ ./result/bin/spine"
+  '';
 }
 #+END_SRC
 
-**** build inputs ldc
+- combining shell.nix & default.nix to build package:
 
-#+BEGIN_SRC nix :tangle ../nixEnv/shells/packages-ldc.nix
-{ pkgs ? import <nixpkgs> {} }:
-let
-  dub2nix-src = fetchTarball {
-    url = "https://github.com/lionello/dub2nix/archive/master.tar.gz";
-  };
-  dub2nix = (import dub2nix-src) { inherit pkgs; };
-in
-with pkgs; [
-  nix
-  ldc
-  sqlite
-  nix-prefetch-git
-  validatePkgConfig
-]
-#+END_SRC
-
-*** shell with dmd & ldc :shell:
-
-#+NAME: nix_shell_with_compilers_dmd_and_ldc
-#+BEGIN_SRC nix
-{ pkgs ? import <nixpkgs> {
-  overlays = [
-    (import ./nixEnv/overlays/ldcVersion.nix)
-  ]; }
+#+BEGIN_SRC nix :NO-tangle ../shell.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-shell"
+#!/usr/bin/env -S nix-shell
+{ pkgs ? import <nixpkgs> {},
+  stdenv ? pkgs.stdenv,
 }:
-let
-  dub2nix-src = fetchTarball {
-    url = "https://github.com/lionello/dub2nix/archive/master.tar.gz";
+with import ./nix/mkDub.nix { inherit pkgs; };
+mkDubDerivation rec {
+  name = "spine-${version}";
+  version = "0.11.1";
+  src = ./.;
+  buildInputs = with pkgs; [(
+    import ./nix/shell-packages.nix
+    { inherit pkgs; }
+  )];
+  meta = with stdenv.lib; {
+    homepage = http://sisudoc.org;
+    description = "a sisu like document parser";
+    license = licenses.agpl3Plus;
+    platforms = platforms.linux;
+    maintainers = [ RalphAmissah ];
   };
-  dub2nix = (import dub2nix-src) { inherit pkgs; };
-in pkgs.mkShell {
-  buildInputs = with pkgs; [
-    nix
-    dub
-    dmd
-    ldc
-    rdmd
-    sqlite
-    dub2nix
-    nix-prefetch-git
-  ];
 }
 #+END_SRC
 
-*** dub2nix version :dub2nix:
-
-#+BEGIN_SRC nix
-  dub2nix-src = fetchTarball {
-    url = "https://github.com/lionello/dub2nix/archive/8e7c65f1fd8c1ef5b32e2bf63ba80fe4f059ec15.tar.gz";
-    sha256 = "0imlbpv40h303h4mq4vijc9psl401n4sdxn3yp6k4gp2n0853xpm";
-  };
-#+END_SRC
-
-** default.nix :default:
-
-- default.nix -I nixpkgs=<provide local nix path>
-  e.g. default.nix -I nixpkgs=/nixpkgs-ra/nixpkgs
-- nix-build -I nixpkgs=<provide local nix path>
-  e.g. nix-build -I nixpkgs=/nixpkgs-ra/nixpkgs
-
-#+BEGIN_SRC txt :tangle ../default.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-build"
-<<nix_project>>
-#+END_SRC
-
-#+BEGIN_SRC txt :tangle ../project.nix
-<<nix_project>>
-#+END_SRC
+- package import incorporated, all in one file
 
-#+NAME: nix_project
-#+BEGIN_SRC nix
+#+BEGIN_SRC nix :NO-tangle ../shell.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-shell"
 { pkgs ? import <nixpkgs> {},
   stdenv ? pkgs.stdenv,
 }:
-with import ./mkDub.nix { inherit pkgs; };
+with import ./nix/mkDub.nix { inherit pkgs; };
 mkDubDerivation rec {
   name = "spine-${version}";
-  version = "<<version_spine>>";
+  version = "0.11.1";
   src = ./.;
   buildInputs = [
     pkgs.sqlite
+    (
+      let
+        dub2nix-src = fetchTarball {
+          url = "https://github.com/lionello/dub2nix/archive/master.tar.gz";
+        };
+        dub2nix = (import dub2nix-src) { inherit pkgs; };
+      in
+      with pkgs; [
+        nixFlakes
+        dub
+        ldc
+        sqlite
+        nix-prefetch-git
+        validatePkgConfig
+      ]
+    )
   ];
+  shellHook = ''
+    # nix-build -I nixpkgs=<provide local nix path>
+    nix-build
+    echo "built spine"
+  '';
+  installPhase = ''
+    install -m755 -D spine $out/bin/spine
+    echo "built $out/bin/spine"
+  '';
   meta = with stdenv.lib; {
     homepage = http://sisudoc.org;
     description = "a sisu like document parser";
@@ -2043,143 +2034,113 @@ mkDubDerivation rec {
 }
 #+END_SRC
 
-** mkDub.nix :mkDub:
+** default.nix :default:
 
-Get current mkDub.nix from the dub2nix project:
+- default.nix -I nixpkgs=<provide local nix path>
+  e.g. default.nix -I nixpkgs=/nixpkgs-ra/nixpkgs
 
-#+BEGIN_SRC sh
-aria2c https://raw.githubusercontent.com/lionello/dub2nix/master/mkDub.nix
-#+END_SRC
+- nix-build -I nixpkgs=<provide local nix path>
+  e.g. nix-build -I nixpkgs=/nixpkgs-ra/nixpkgs
 
-*** mkDub dmd
+  nix-build -I nixpkgs=/nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs
+  nix-build -I .envrc-local
+  nix-build -I .envrc
+  default.nix -I .envrc
+  default.nix
 
-#+BEGIN_SRC nix :tangle ../nixEnv/dub/mkDub-dmd.nix
+#+BEGIN_SRC nix :tangle ../default.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-build"
 { pkgs ? import <nixpkgs> {},
   stdenv ? pkgs.stdenv,
-  rdmd ? pkgs.rdmd,
-  dmd ? pkgs.dmd,
-  dub ? pkgs.dub }:
-
-with stdenv;
-let
-  # Filter function to remove the .dub package folder from src
-  filterDub = name: type: let baseName = baseNameOf (toString name); in ! (
-    type == "directory" && baseName == ".dub"
-  );
-
-  # Convert a GIT rev string (tag) to a simple semver version
-  rev-to-version = builtins.replaceStrings ["v" "refs/tags/v"] ["" ""];
-
-  dep2src = dubDep: pkgs.fetchgit { inherit (dubDep.fetch) url rev sha256 fetchSubmodules; };
-
-  # Fetch a dependency (source only for now)
-  fromDub = dubDep: mkDerivation rec {
-    name = "${src.name}-${version}";
-    version = rev-to-version dubDep.fetch.rev;
-    nativeBuildInputs = [ rdmd dmd dub ];
-    src = dep2src dubDep;
-
-    buildPhase = ''
-      runHook preBuild
-      export HOME=$PWD
-      dub build -b=release
-      runHook postBuild
-    '';
-
-    # outputs = [ "lib" ];
-
-    # installPhase = ''
-    #   runHook preInstall
-    #   mkdir -p $out/bin
-    #   runHook postInstall
-    # '';
-  };
-
-  # Adds a local package directory (e.g. a git repository) to Dub
-  dub-add-local = dubDep: "dub add-local ${(fromDub dubDep).src.outPath} ${rev-to-version dubDep.fetch.rev}";
-
-  # The target output of the Dub package
-  targetOf = package: "${package.targetPath or "."}/${package.targetName or package.name}";
-
-  # Remove reference to build tools and library sources
-  disallowedReferences = deps: [ dmd rdmd dub ] ++ builtins.map dep2src deps;
-
-  removeExpr = refs: ''remove-references-to ${lib.concatMapStrings (ref: " -t ${ref}") refs}'';
-
-in {
-  inherit fromDub;
-
-  mkDubDerivation = lib.makeOverridable ({
-    src,
-    nativeBuildInputs ? [],
-    dubJSON ? src + "/dub.json",
-    selections ? src + "/dub.selections.nix",
-    deps ? import selections,
-    passthru ? {},
-    package ? lib.importJSON dubJSON,
-    ...
-  } @ attrs: stdenv.mkDerivation (attrs // {
-
-    pname = package.name;
-
-    nativeBuildInputs = [ rdmd dmd dub pkgs.removeReferencesTo ] ++ nativeBuildInputs;
-    disallowedReferences = disallowedReferences deps;
-
-    passthru = passthru // {
-      inherit dub dmd rdmd pkgs;
-    };
-
-    src = lib.cleanSourceWith {
-      filter = filterDub;
-      src = lib.cleanSource src;
-    };
+}:
+with import ./nix/mkDub.nix { inherit pkgs; };
+mkDubDerivation rec {
+  name = "spine-${version}";
+  version = "<<version_spine>>";
+  src = ./.;
+  buildInputs = [
+    pkgs.sqlite
+    (import ./nix/shell-packages.nix { inherit pkgs; })
+  ];
+  # installPhase = ''
+  #   install -m755 -D spine $out/bin/spine
+  #   echo "built $out/bin/spine"
+  # '';
+  <<nix_project_meta>>
+}
+#+END_SRC
 
-    preFixup = ''
-      find $out/bin -type f -exec ${removeExpr (disallowedReferences deps)} '{}' + || true
-    '';
+** project.nix :project:
 
-    buildPhase = ''
-      runHook preBuild
+#+BEGIN_SRC nix :tangle ../project.nix :tangle-mode (identity #o755) :shebang "#!/usr/bin/env -S nix-build"
+{ pkgs ? import <nixpkgs> {},
+  stdenv ? pkgs.stdenv,
+}:
+with import ./nix/mkDub.nix { inherit pkgs; };
+mkDubDerivation rec {
+  name = "spine-${version}";
+  version = "<<version_spine>>";
+  src = ./.;
+  buildInputs = [
+    pkgs.sqlite
+    (
+      <<nix_dub2nix_with_pkgs>>
+    )
+  ];
+  shellHook = ''
+    # nix-build -I nixpkgs=<provide local nix path>
+    nix-build
+    echo "built spine"
+  '';
+  installPhase = ''
+    install -m755 -D spine $out/bin/spine
+    echo "built $out/bin/spine"
+  '';
+  <<nix_project_meta>>
+}
+#+END_SRC
 
-      export HOME=$PWD
-      ${lib.concatMapStringsSep "\n" dub-add-local deps}
-      dub build --build=release --combined --skip-registry=all
+- unused
+  - installPhase
 
-      runHook postBuild
-    '';
+#+BEGIN_SRC txt
+installPhase = ''
+  mkdir -p $out/bin
+  cp spine $out/bin
+  chmod +x $out/bin/spine
+'';
+#+END_SRC
 
-    checkPhase = ''
-      runHook preCheck
+** project meta
 
-      export HOME=$PWD
-      ${lib.concatMapStringsSep "\n" dub-add-local deps}
-      dub test --combined --skip-registry=all
+#+NAME: nix_project_meta
+#+BEGIN_SRC nix
+meta = with stdenv.lib; {
+  homepage = http://sisudoc.org;
+  description = "a sisu like document parser";
+  license = licenses.agpl3Plus;
+  platforms = platforms.linux;
+  maintainers = [ RalphAmissah ];
+};
+#+END_SRC
 
-      runHook postCheck
-    '';
+** mkDub.nix :mkDub:
 
-    installPhase = ''
-      runHook preInstall
+Get current mkDub.nix from the dub2nix project:
 
-      mkdir -p $out/bin
-      cp -r "${targetOf package}" $out/bin
+#+BEGIN_SRC sh
+aria2c https://raw.githubusercontent.com/lionello/dub2nix/master/mkDub.nix ./nix/.
+#+END_SRC
 
-      runHook postInstall
-    '';
+*** dub2nix
 
-    meta = lib.optionalAttrs (package ? description) {
-      description = package.description;
-    } // attrs.meta or {};
-  } // lib.optionalAttrs (!(attrs ? version)) {
-    # Use name from dub.json, unless pname and version are specified
-    name = package.name;
-  }));
-}
+#+BEGIN_SRC nix :tangle ../nix/shell-packages.nix
+{ pkgs ? import <nixpkgs> {} }:
+<<nix_dub2nix_with_pkgs>>
 #+END_SRC
 
-*** mkDub ldc HACK
+*** mkDub
 
-#+BEGIN_SRC nix :tangle ../nixEnv/dub/mkDub-ldc.nix
+#+BEGIN_SRC nix :tangle ../nix/mkDub.nix
 { pkgs ? import <nixpkgs> {},
   stdenv ? pkgs.stdenv,
   ldc ? pkgs.ldc,
@@ -2239,7 +2200,7 @@ in {
     src,
     nativeBuildInputs ? [],
     dubJSON ? src + "/dub.json",
-    selections ? src + "/dub.selections.nix",
+    selections ? src + "/nix/dub.selections.nix",
     deps ? import selections,
     passthru ? {},
     package ? lib.importJSON dubJSON,
@@ -2303,93 +2264,39 @@ in {
 }
 #+END_SRC
 
-** overlays :overlay:
-*** compilers (latest versions) [version information set elsewhere]
-**** ldcVersion.nix overlay :ldc:version:
+** dub2nix & shared pkgs SHARED
+*** dub2nix with pkgs shared
 
-#+BEGIN_SRC nix :tangle ../nixEnv/overlays/ldcVersion.nix
-self: super: rec {
-  ldc = super.ldc.overrideAttrs(oldAttrs: rec {
-    pname   = "ldc";
-    <<ldc_version_info>>
-    name = "${pname}-${version}";
-    src = super.fetchurl {
-      url = "https://github.com/ldc-developers/ldc/releases/download/v${version}/ldc-${version}-src.tar.gz";
-      sha256 = sha256;
-    };
-    postUnpack = ''
-      patchShebangs .
-    '';
-  });
-}
-#+END_SRC
-
-**** dmdVersion.nix overlay HACK :dmd:version:
-
-no working overlay, tangle to work on
-
-#+BEGIN_SRC nix :NO-tangle ../nixEnv/overlays/dmdVersion.nix
-self: super: rec {
-  pname   = "dmd";
-  <<dmd_version_info>>
-  dmd = super.dmd.overrideAttrs(oldAttrs: rec {
-    inherit pname year version sha256;
-    name = "${pname}-${version}";
-    src = super.fetchurl {
-      url = "http://downloads.dlang.org/releases/${year}/dmd.${version}.linux.tar.xz";
-      sha256 = sha256;
-    };
-    # postUnpack = ''
-    #   patchShebangs .
-    # '';
-  });
-}
-#+END_SRC
-
-** version info REVIEW :version:
-
-- https://dlang.org/download.html
-
-*** compilers (set latest versions) :compiler:version:
-**** ldc VERSION :version:set:ldc:
-
-- https://github.com/ldc-developers/ldc/releases
-
-***** 1.24.0 HACK
-
-- https://github.com/ldc-developers/ldc/releases/tag/v1.24.0
-  - nix-prefetch-url https://github.com/ldc-developers/ldc/releases/download/v1.24.0/ldc-1.24.0-src.tar.gz
-
-#+NAME: ldc_version_info
+#+NAME: nix_dub2nix_with_pkgs
 #+BEGIN_SRC nix
-version = "1.24.0";
-sha256  = "0g5svf55i0kq55q49awmwqj9qi1n907cyrn1vjdjgs8nx6nn35gx";
+let
+  <<nix_shell_dub2nix>>
+in
+with pkgs; [
+  <<nix_shell_with_pkgs_list>>
+]
 #+END_SRC
 
-- ldc-1.24.0 overlay does not build with latest nixos version, nixos-20.09
-  nixos at ldc-1.20.0
-
-***** 1.23.0
-
-- https://github.com/ldc-developers/ldc/releases/tag/v1.23.0
-  - nix-prefetch-url https://github.com/ldc-developers/ldc/releases/download/v1.23.0/ldc-1.23.0-src.tar.gz
+*** get dub2nix
 
+#+NAME: nix_shell_dub2nix
 #+BEGIN_SRC nix
-version = "1.23.0";
-sha256  = "1fdgj222x29as466vdxy9c0m82zzlsb7vnvvh89n2riszcrx463d";
+dub2nix-src = fetchTarball {
+  url = "https://github.com/lionello/dub2nix/archive/master.tar.gz";
+};
+dub2nix = (import dub2nix-src) { inherit pkgs; };
 #+END_SRC
 
-**** dmd :dmd:
-https://dlang.org/changelog/index.html
-https://dlang.org/changelog/pending.html
-http://downloads.dlang.org/releases/
-http://downloads.dlang.org/releases/2.x/
+*** with pkgs list
 
-#+NAME: dmd_version_info
+#+NAME: nix_shell_with_pkgs_list
 #+BEGIN_SRC nix
-version = "2.094.0";
-sha256  = "0xhm8m46ahfx3hcibi3vws02zaplny3226f3x8cd8584gzfqyzxp";
-year    = "2020";
+nixFlakes
+dub
+ldc
+sqlite
+nix-prefetch-git
+validatePkgConfig
 #+END_SRC
 
 * .gitignore :gitignore:
@@ -2419,8 +2326,8 @@ year    = "2020";
 !misc
 !misc/**
 !*.nix
-!nixEnv
-!nixEnv/**
+!nix
+!nix/**
 !.envrc
 !src
 !src/**
@@ -2469,7 +2376,8 @@ tmp/**
 #.reggae/**
 #+END_SRC
 
-* sh script to batch process _emacs org babel tangle_ :shell_script:tangle:
+* misc
+** sh script to batch process _emacs org babel tangle_ :shell_script:tangle:
   [[http://orgmode.org/manual/Batch-execution.html]]
 creates a shell batch script called "tangle", that will tangle (emacs org
 babel tangle) org files in ./org/ to create .d source files in ./src/doc_reform/
@@ -2504,23 +2412,66 @@ emacs --batch -Q -q \
 #+END_SRC
 
 ** build
+*** nix
+**** nix-shell
+
+- default.nix
+
+#+BEGIN_SRC sh
+nix-shell
+nix-build
+#+END_SRC
+
+- project.nix
+
+#+BEGIN_SRC sh
+nix-shell
+nix-build project.nix
+#+END_SRC
+
+**** nix-shell --pure
+
+- default.nix
+
+#+BEGIN_SRC sh
+nix-shell --pure
+nix-build -I nixpkgs=/nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs
+#+END_SRC
+
+- project.nix
+
+#+BEGIN_SRC sh
+nix-shell --pure
+nix-build -I nixpkgs=/nixpkgs-ra/nixpkgs/.gitworktree/ra/nixpkgs project.nix
+#+END_SRC
+
+**** derivation .drv
+
+#+BEGIN_SRC sh
+nix show-derivation /nix/store/q7n14bm8j5vzm62qaraczdb4bpyf59vv-spine-0.11.1.drv
+#+END_SRC
+
 *** dub
 
-#+BEGIN_SRC sh  :tangle no
+#+BEGIN_SRC sh
 dub build -h
 #+END_SRC
 
 #+BEGIN_SRC sh
-time (dub --compiler=dmd --config=spine-dmd --debug=steps)
+time dub --compiler=ldc2 -v --force
 time (dub --compiler=ldc2 --config=spine-ldc --debug=steps)
-time (dub --compiler=gdc --config=spine-gdc --debug=steps)
-
 time (dub --compiler=ldc2 --config=spine-ldc --debug=checkdoc --debug=summary --debug=dumpdoc)
 time (dub --compiler=ldc2 --config=spine-ldc --debug=io)
 time (dub --compiler=ldc2 --config=spine-ldc --debug=checkdoc --debug=summary --debug=dumpdoc --debug=io)
 time (dub --compiler=ldc2 --config=spine-ldc-debug --debug=io)
-time (dub --compiler=gdc --config=spine-gdc-debug --debug=io)
+
+time dub --compiler=dmd -v --force
+time (dub --compiler=dmd --config=spine-dmd --debug=steps)
 time (dub --compiler=dmd --config=spine-dmd-debug --debug=io)
+
+time dub --compiler=gdc -v --force
+time (dub --compiler=gdc --config=spine-gdc --debug=steps)
+time (dub --compiler=gdc --config=spine-gdc-debug --debug=io)
 #+END_SRC
 
 *** make
@@ -2541,36 +2492,26 @@ time make tangle ldc
 time make ldc_testrun_find_pod_epub
 #+END_SRC
 
-** dub zfunc :zfunc:
-*** ,dubdmd :dmd:
-
-#+BEGIN_SRC sh  :tangle no
-time dub --compiler=dmd -v --force
-#+END_SRC
-
-*** ,dubldc :ldc:
-
-#+BEGIN_SRC sh  :tangle no
-time dub --compiler=ldc2 -v --force
-#+END_SRC
-
-*** ,dubgdc :gdc:
-
-#+BEGIN_SRC sh  :tangle no
-time dub --compiler=gdc -v --force
-#+END_SRC
-
 ** git
 *** project version
 
+#+BEGIN_SRC sh
 echo $(git describe --long --tags | sed 's/^[ a-z_-]\+\([0-9.]\+\)/\1/;s/\([^-]*-g\)/r\1/;s/-/./g')
+#+END_SRC
 
 *** what files changed
+
+#+BEGIN_SRC sh
 git whatchanged --since="1 day ago" --oneline --name-only --pretty=format: | sort -u
 git log --since="1 day ago" --name-only --pretty=format: | sort -u
+#+END_SRC
 
 ** test run
 *** e.g.
+
+#+BEGIN_SRC sh
+time (./result/bin/spine --source --html -v --output-dir=tmp/program-output data/pod/sisu-manual/media/text/en/sisu_markup.sst )
+
 time (./bin/spine-ldc --source --html -v --output-dir=tmp/program-output data/pod/sisu-manual/media/text/en/sisu_markup.sst )
 
 time (./bin/spine-ldc --source --html -v --output-dir=tmp/program-output data/pod/sisu-manual )
@@ -2596,6 +2537,43 @@ time ( find data/sisudir/media/text -name *.ss[tm] | sort | xargs ./bin/spine-ld
 find data/pod -maxdepth 2 -name pod.manifest | sort | xargs
 
 find data/sisudir/media/text -name *.ss[tm] | sort | xargs
+#+END_SRC
+
+*** sort
+
+#+BEGIN_SRC sh
+~dr/bin/spine-ldc -v  --sqlite-db-create --sqlite-filename="spine.search.db" --cgi-sqlite-search-filename="spine-search" --output=/var/www/html \
+  ~grotto/repo/git.repo/code/project-spine/doc-reform-markup/markup_samples/markup/pod/*
+
+~dr/bin/spine-ldc -v  --sqlite-update --sqlite-filename="spine.search.db"   --output=/var/www/html \
+  ~grotto/repo/git.repo/code/project-spine/doc-reform-markup/markup_samples/markup/pod/*
+
+~dr/bin/spine-ldc -v --html --harvest-link  --output=/var/www/html \
+   ~grotto/repo/git.repo/code/project-spine/doc-reform-markup/markup_samples/markup/pod/*
+
+~dr/bin/spine-ldc -q --show-config --html --output=/var/www/html ~grotto/repo/git.repo/code/project-spine/doc-reform-markup/markup_samples/markup/pod
+
+~dr/bin/spine-ldc -q --show-config ~grotto/repo/git.repo/code/project-spine/doc-reform-markup/markup_samples/markup/pod
+
+~dr/result/bin/spine --html --output=/var/www/html /grotto-ra/repo/git.repo/projects/project-spine/doc-reform-markup/markup_samples/markup/pod/*
+
+~dr/result/bin/spine --very-verbose --sqlite-db-create --sqlite-filename="spine.search.db" --cgi-sqlite-search-filename="spine-search" --output=/var/www /grotto-ra/repo/git.repo/projects/project-spine/doc-reform-markup/markup_samples/markup/pod/*
+
+~dr/result/bin/spine --very-verbose --sqlite-update --sqlite-filename="spine.search.db" --cgi-sqlite-search-filename="spine-search" --output=/var/www /grotto-ra/repo/git.repo/projects/project-spine/doc-reform-markup/markup_samples/markup/pod/*
+#+END_SRC
+
+- produces:
+  - sqlite db @:           /var/www/html/sqlite/spine.search.db
+  - search script in D @:  /var/www/html/cgi/src/spine_search.d
+  - html output *          /var/www/html/en/html/[filename]
+
+#+BEGIN_SRC sh
+cd /var/www/html/cgi
+
+cp arsd/cgi.d /var/www/html/cgi/.          *-[needs to be implemented as part of code]
+
+dub --force --compiler=ldc2 && sudo cp -v cgi-bin/spine-search /usr/lib/cgi-bin/.
+#+END_SRC
 
 *** list markup files
 find data/pod -name pod.manifest | sort
@@ -2606,8 +2584,8 @@ time make ldc_testrun_paths_pod_pod | ag "^\".+\"|NOT found"
 time make ldc_testrun_find_pod_pod
 time make ldc_testrun_find_dir_pod
 time make ldc_testrun_filelist_dir_pod
-** misc
-*** compilers
+
+** compilers
 
 - [X] Set D_COMPILER (one of DMD LDC or GDC)
 - [X] Set debug flags (using DMD standard flag -deb
@@ -2615,14 +2593,44 @@ time make ldc_testrun_filelist_dir_pod
 [[http://wiki.dlang.org/Compilers][D Compilers wiki https://wiki.dlang.org/Compilers]]
 [[http://dlang.org/download.html][D Compilers download http://dlang.org/download.html]]
 
-*** dub :dub:
+** version info REVIEW :version:
+
+- https://dlang.org/download.html
+
+*** compilers (set latest versions) :compiler:version:
+**** ldc VERSION :version:set:ldc:
+
+- https://github.com/ldc-developers/ldc/releases
+
+***** 1.24.0 HACK
+
+- https://github.com/ldc-developers/ldc/releases/tag/v1.24.0
+  - nix-prefetch-url https://github.com/ldc-developers/ldc/releases/download/v1.24.0/ldc-1.24.0-src.tar.gz
+
+#+NAME: ldc_version_info
+#+BEGIN_SRC nix
+version = "1.24.0";
+sha256  = "0g5svf55i0kq55q49awmwqj9qi1n907cyrn1vjdjgs8nx6nn35gx";
+#+END_SRC
+
+- ldc-1.24.0 overlay does not build with latest nixos version, nixos-20.09
+  nixos at ldc-1.20.0
+
+**** dmd :dmd:
+
+- https://dlang.org/changelog/index.html
+- https://dlang.org/changelog/pending.html
+- http://downloads.dlang.org/releases/
+- http://downloads.dlang.org/releases/2.x/
+
+** dub :dub:
 
 https://github.com/dlang/dub/
 http://code.dlang.org/getting_started
 http://code.dlang.org/docs/commandline
 
-**** setup
-***** dub json or sdlang
+*** setup
+**** dub json or sdlang
 
 Every DUB package should contain a [[http://code.dlang.org/package-format?lang=json][dub.json]] or [[http://code.dlang.org/package-format?lang=sdl][dub.sdl]]
 https://code.dlang.org/package-format?lang=sdl
@@ -2631,7 +2639,7 @@ https://github.com/Abscissa/SDLang-D/blob/master/HOWTO.md
 
 https://code.dlang.org/docs/commandline
 
-***** dub dependencies
+**** dub dependencies
 
 dub list
 dub upgrade
@@ -2642,8 +2650,8 @@ dub fetch unit-threaded ?
 sdp ~master: /home/ralph/grotto/repo/git.repo/utils/spine-x/
 /home/ralph/.dub/packages/*
 
-**** build
-***** debug flags
+*** build
+**** debug flags
 
 #+BEGIN_SRC sh
 biblio
@@ -2696,3 +2704,163 @@ summary
 table
 toc
 #+END_SRC
+
+*** dub (using ldc rather than dmd) overlay REFERENCE :overlay:
+
+#+BEGIN_SRC nix :NO-tangle ~/nixpkgs/pkgs/development/tools/build-managers/dub/default.nix
+{ stdenv, fetchFromGitHub, curl, libevent, rsync , ldc ? null, dcompiler ? ldc }:
+
+assert dcompiler != null;
+
+stdenv.mkDerivation rec {
+  pname = "dub";
+  version = "1.23.0";
+
+  enableParallelBuilding = true;
+
+  src = fetchFromGitHub {
+    owner = "dlang";
+    repo = "dub";
+    rev = "v${version}";
+    sha256 = "vqn6QlPMFc/sVbwHeU/eQ/1jB3KRW5PABMDUQDXkRBk=";
+    # nix-prefetch-url https://github.com/dlang/dub/archive/v1.23.0.tar.gz
+  };
+
+  postUnpack = ''
+      patchShebangs .
+  '';
+
+  # Can be removed with https://github.com/dlang/dub/pull/1368
+  dubvar = "\\$DUB";
+  postPatch = ''
+      substituteInPlace test/fetchzip.sh \
+          --replace "dub remove" "\"${dubvar}\" remove"
+  '';
+
+  nativeBuildInputs = [ dcompiler libevent rsync ];
+  buildInputs = [ curl ];
+
+  buildPhase = ''
+    for dc_ in dmd ldmd2 gdmd; do
+      echo "check for D compiler $dc_"
+      dc=$(type -P $dc_ || echo "")
+      if [ ! "$dc" == "" ]; then
+        break
+      fi
+    done
+    if [ "$dc" == "" ]; then
+      exit "Error: could not find D compiler"
+    fi
+    echo "$dc_ used as D compiler to build dub"
+    $dc ./build.d
+    ./build
+  '';
+
+  doCheck = !stdenv.isDarwin;
+
+  checkPhase = ''
+    export DUB=$NIX_BUILD_TOP/source/bin/dub
+    export PATH=$PATH:$NIX_BUILD_TOP/source/bin/
+    export DC=${dcompiler.out}/bin/${dcompiler.pname}
+    echo "DC out --> $DC"
+    export HOME=$TMP
+    #rm -rf test/*
+    rm -rf test/issue502-root-import
+    rm test/issue990-download-optional-selected.sh
+    rm test/timeout.sh
+    rm test/issue674-concurrent-dub.sh
+    rm test/issue672-upgrade-optional.sh
+    rm test/issue1574-addcommand.sh
+    rm test/issue1524-maven-upgrade-dependency-tree.sh
+    rm test/issue1416-maven-repo-pkg-supplier.sh
+    rm test/issue1037-better-dependency-messages.sh
+    rm test/interactive-remove.sh
+    rm test/fetchzip.sh
+    rm test/feat663-search.sh
+    rm test/ddox.sh
+    rm test/0-init-multi.sh
+    rm test/4-describe-data-1-list.sh
+    rm test/4-describe-data-3-zero-delim.sh
+    rm test/4-describe-import-paths.sh
+    rm test/4-describe-string-import-paths.sh
+    rm test/4-describe-json.sh
+    rm test/5-convert-stdout.sh
+    rm test/0-init-multi-json.sh
+    rm test/issue1003-check-empty-ld-flags.sh
+    rm test/issue103-single-file-package.sh
+    rm test/issue1040-run-with-ver.sh
+    rm test/issue1091-bogus-rebuild.sh
+    rm test/issue1180-local-cache-broken.sh
+    rm test/issue1194-warn-wrong-subconfig.sh
+    rm test/issue1277.sh
+    rm test/issue1372-ignore-files-in-hidden-dirs.sh
+    rm test/issue1447-build-settings-vars.sh
+    rm test/issue1531-toolchain-requirements.sh
+    rm test/issue1773-lint.sh
+    rm test/issue346-redundant-flags.sh
+    rm test/issue361-optional-deps.sh
+    rm test/issue564-invalid-upgrade-dependency.sh
+    rm test/issue586-subpack-dep.sh
+    rm test/issue616-describe-vs-generate-commands.sh
+    rm test/issue686-multiple-march.sh
+    rm test/issue813-fixed-dependency.sh
+    rm test/issue813-pure-sub-dependency.sh
+    rm test/issue820-extra-fields-after-convert.sh
+    rm test/issue877-auto-fetch-package-on-run.sh
+    rm test/issue923-subpackage-deps.sh
+    rm test/single-file-sdl-default-name.sh
+    rm test/subpackage-common-with-sourcefile-globbing.sh
+    rm test/issue934-path-dep.sh
+    rm test/version-spec.sh
+    rm -rf test/1-dynLib-simple
+    rm -rf test/1-exec-simple-package-json
+    rm -rf test/1-exec-simple
+    rm -rf test/1-staticLib-simple
+    rm -rf test/2-dynLib-dep
+    rm -rf test/2-staticLib-dep
+    rm -rf test/2-dynLib-with-staticLib-dep
+    rm -rf test/2-sourceLib-dep/
+    rm -rf test/3-copyFiles
+    rm -rf test/custom-source-main-bug487
+    rm -rf test/custom-unittest
+    rm -rf test/issue1262-version-inheritance-diamond
+    rm -rf test/git-dependency
+    rm -rf test/issue1003-check-empty-ld-flags
+    rm -rf test/ignore-hidden-1
+    rm -rf test/ignore-hidden-2
+    rm -rf test/issue1427-betterC
+    rm -rf test/issue130-unicode-*
+    rm -rf test/issue1262-version-inheritance
+    rm -rf test/issue1372-ignore-files-in-hidden-dirs
+    rm -rf test/issue1350-transitive-none-deps
+    rm -rf test/issue1775
+    rm -rf test/issue1447-build-settings-vars
+    rm -rf test/issue1408-inherit-linker-files
+    rm -rf test/issue1551-var-escaping
+    rm -rf test/issue754-path-selection-fail
+    rm -rf test/issue1788-incomplete-string-import-override
+    rm -rf test/subpackage-ref
+    rm -rf test/issue777-bogus-path-dependency
+    rm -rf test/issue959-path-based-subpack-dep
+    rm -rf test/issue97-targettype-none-nodeps
+    rm -rf test/issue97-targettype-none-onerecipe
+    rm -rf test/path-subpackage-ref
+    rm -rf test/sdl-package-simple
+    ./test/run-unittest.sh
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp bin/dub $out/bin
+    #cp $NIX_BUILD_TOP/dub $out/bin
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Package and build manager for D applications and libraries";
+    homepage = "https://code.dlang.org/";
+    license = licenses.mit;
+    maintainers = with maintainers; [ ThomasMader ];
+    platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
+  };
+}
+#+END_SRC
diff --git a/project.nix b/project.nix
index 9b335e3..1877443 100644..100755
--- a/project.nix
+++ b/project.nix
@@ -1,14 +1,40 @@
+#!/usr/bin/env -S nix-build
 { pkgs ? import <nixpkgs> {},
   stdenv ? pkgs.stdenv,
 }:
-with import ./mkDub.nix { inherit pkgs; };
+with import ./nix/mkDub.nix { inherit pkgs; };
 mkDubDerivation rec {
   name = "spine-${version}";
   version = "0.11.1";
   src = ./.;
   buildInputs = [
     pkgs.sqlite
+    (
+      let
+        dub2nix-src = fetchTarball {
+          url = "https://github.com/lionello/dub2nix/archive/master.tar.gz";
+        };
+        dub2nix = (import dub2nix-src) { inherit pkgs; };
+      in
+      with pkgs; [
+        nixFlakes
+        dub
+        ldc
+        sqlite
+        nix-prefetch-git
+        validatePkgConfig
+      ]
+    )
   ];
+  shellHook = ''
+    # nix-build -I nixpkgs=<provide local nix path>
+    nix-build
+    echo "built spine"
+  '';
+  installPhase = ''
+    install -m755 -D spine $out/bin/spine
+    echo "built $out/bin/spine"
+  '';
   meta = with stdenv.lib; {
     homepage = http://sisudoc.org;
     description = "a sisu like document parser";
diff --git a/shell.nix b/shell.nix
index e102643..4edc4bd 120000..100755
--- a/shell.nix
+++ b/shell.nix
@@ -1 +1,11 @@
-nixEnv/shells/shell-ldc-verNix.nix
\ No newline at end of file
+#!/usr/bin/env -S nix-shell
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    (import ./nix/shell-packages.nix { inherit pkgs; })
+  ];
+  shellHook = ''
+    nix-build
+    echo "built spine @ ./result/bin/spine"
+  '';
+}
diff --git a/spine.nix b/spine.nix
new file mode 120000
index 0000000..ef4723a
--- /dev/null
+++ b/spine.nix
@@ -0,0 +1 @@
+project.nix
\ No newline at end of file