nix & build housekeeping, alternative D compilers

- compilation status
  - dmd (@D2.100) ok, & has been fine
  - ldc (@D2.100) ok, & has been fine
  - gdc11 available in nixpkgs does not compile
    awaiting gdc12 (which would also be based on
    @D2.100 & just might)

2 files changed, 104 insertions, 132 deletions

diff --git a/org/config_dub.org b/org/config_dub.org
index 3a41711..ae25f5a 100644
--- a/org/config_dub.org
+++ b/org/config_dub.org
@@ -168,6 +168,10 @@
     {
       "name":                  "gdc",
       "targetName":            "spine-gdc"
+    },
+    {
+      "name":                  "gdmd",
+      "targetName":            "spine-gdc"
     }
   ]
 }
diff --git a/org/config_nix.org b/org/config_nix.org
index df999ad..dd8c548 100644
--- a/org/config_nix.org
+++ b/org/config_nix.org
@@ -35,8 +35,8 @@
 
 #+HEADER: :tangle ../.envrc
 #+BEGIN_SRC sh
-# nix_direnv_watch_file provided-filename
 use flake .
+#use flake .#default
 NIX_ENFORCE_PURITY=1
 NixDirEnvVersion="2.2.0"
 if ! has nix_direnv_version || ! nix_direnv_version ${NixDirEnvVersion}; then
@@ -44,9 +44,32 @@ if ! has nix_direnv_version || ! nix_direnv_version ${NixDirEnvVersion}; then
 # source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/${NixDirEnvVersion}/direnvrc" "sha256-0000000000000000000000000000000000000000000="
   source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/${NixDirEnvVersion}/direnvrc" "sha256-5EwyKnkJNQeXrRkYbwwRBcXbibosCJqyIUuz9Xq+LRc="
 fi
+# reload when these files change
+watch_file flake.lock
+watch_file flake.nix
+nix flake update && nix flake check --show-trace && nix flake show
 if [ -f .envrc-local ]; then
   source_env_if_exists .envrc-local || source .envrc-local
 fi
+echo "
+
+- nix flake update && nix flake check --show-trace && nix flake show && nix develop .#devShell
+
+- nix build .#default --print-build-logs
+- nix build .#spine-dmd --print-build-logs
+- nix build .#spine-ldc --print-build-logs
+- nix build .#spine-gdc --print-build-logs
+
+nix-shell '<nixpkgs>' -A nix --pure
+
+nix run .#default --print-build-logs
+
+nix develop --build .#default --print-build-logs
+
+nix shell .#default --print-build-logs --command spine -v
+nix shell .#default --print-build-logs --command spine --very-verbose --epub --html --html-link-search --html-link-curate --curate --output=\"\$SpineOUT\" ./markup/pod
+nix shell .#default --print-build-logs --command spine --very-verbose --html --html-link-search --html-link-curate --curate --sqlite-update --sqlite-db-filename=\"spine.search.db\" --cgi-sqlite-search-filename=\"spine_search\" --sqlite-db-path=\"\$SpineDBpath\" --output=\"\$SpineOUT\" ./markup/pod
+"
 #+END_SRC
 
 **** .envrc-local CHECK MODIFY
@@ -56,11 +79,6 @@ fi
 #+HEADER: :tangle ../.envrc-local_
 #+HEADER: :noweb yes
 #+BEGIN_SRC sh
-# reload when these files change
-watch_file flake.lock
-watch_file flake.nix
-nix flake update; nix flake check; nix flake show
-#use flake .#default
 PATH_add result/bin
 export NIX_PATH=/nix/var/nix/profiles/per-user/root/channels/nixos
 #export NIX_PATH=/srv/nix/nixpkgs
@@ -115,11 +133,68 @@ export PROG_VER_DECLARED="`cat ./views/version.txt | grep --color=never "enum" |
             meta.mainProgram   = "spine";
             executable         = true;
             src                = self;
-            shell              = ./default.nix;
-            devEnv             = ./devenv.nix;
+            #shell              = ./shell.nix; # ./default.nix;
+            #devEnv             = ./shell.nix; # ./default.nix;
+            buildInputs        = [ sqlite ];
+            nativeBuildInputs  = [ dub dmd ldc gdc gnumake ]; # [ dub dmd ]; [ dub ldc ]; [ dub gdc ];
+            buildPhase = ''
+              runHook preBuild
+              for DC_ in dmd ldmd2 ldc2 gdc 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 $pname"
+              dub build --compiler=$DC --build=$DC_ --combined --skip-registry=all
+              runHook postBuild
+            '';
+            <<flake_phases_other_than_build>>
+          };
+          spine-dmd = stdenv.mkDerivation {
+            pname              = "spine";
+            inherit version;
+            meta.mainProgram   = "spine-dmd";
+            executable         = true;
+            src                = self;
+            buildInputs        = [ sqlite ];
+            nativeBuildInputs  = [ dub dmd gnumake ];
+            buildPhase = ''
+              runHook preBuild
+              dub build --compiler=$(type -P dmd) --build=dmd --combined --skip-registry=all
+              runHook postBuild
+            '';
+            <<flake_phases_other_than_build>>
+          };
+          spine-ldc = stdenv.mkDerivation {
+            pname              = "spine";
+            inherit version;
+            meta.mainProgram   = "spine-ldc";
+            executable         = true;
+            src                = self;
+            buildInputs        = [ sqlite ];
+            nativeBuildInputs  = [ dub ldc gnumake ];
+            buildPhase = ''
+              runHook preBuild
+              dub build --compiler=$(type -P ldc2) --build=ldc2 --combined --skip-registry=all
+              runHook postBuild
+            '';
+            <<flake_phases_other_than_build>>
+          };
+          spine-gdc = stdenv.mkDerivation {
+            pname              = "spine";
+            inherit version;
+            meta.mainProgram   = "spine-gdc";
+            executable         = true;
+            src                = self;
             buildInputs        = [ sqlite ];
-            nativeBuildInputs  = [ dub dmd ]; # [ dub dmd ]; [ dub ldc ]; [ dub gdc ];
-            <<flake_phases>>
+            nativeBuildInputs  = [ dub gdc gnumake ];
+            buildPhase = ''
+              runHook preBuild
+              dub build --compiler=$(type -P gdc) --build=gdc --combined --skip-registry=all
+              runHook postBuild
+            '';
+            <<flake_phases_other_than_build>>
           };
           #vendorSha256 = "sha256-0Q00000000000000000000000000000000000000000=";
         });
@@ -132,132 +207,12 @@ export PROG_VER_DECLARED="`cat ./views/version.txt | grep --color=never "enum" |
       devShells = forAllSystems (system:
         let pkgs               = nixpkgsFor.${system};
         in with pkgs; {
-          devShell             = mkShell { buildInputs = [ git dub dmd ldc gdc sqlite ]; };
+          devShell              = mkShell { };
         });
   };
 }
 #+END_SRC
 
-**** some other possible flakes (samples)
-***** flake 0
-
-#+NAME: flake_0
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-{
-  description = "a sisu like parser & document generator";
-  inputs.<<flake_inputs_nix>>
-  outputs = { <<flake_outputs>> }: {
-    <<flake_output_spine>>
-    <<flake_output_default>>
-  };
-}
-#+END_SRC
-
-***** flake single system
-
-#+NAME: flake_single_sytem
-#+HEADER: :tangle ../flake-1-single-system_.nix
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-{
-  description                = "a sisu like parser & document generator";
-  inputs.<<flake_inputs_nix>>
-  outputs = { <<flake_outputs>> }: {
-    packages.x86_64-linux.spine =
-      let
-        pkgs = import nixpkgs {
-          system = "x86_64-linux";
-        };
-        #targetOf = package: "${package.targetPath or "."}/${package.targetName or package.name}";
-      in pkgs.stdenv.mkDerivation {
-        <<flake_metadata>>
-        inherit self;
-        src = self;
-        #shell = ./shell.nix;
-        shell = ./default.nix;
-        devEnv = ./devenv.nix;
-        <<flake_phases>>
-        buildInputs       = [ sqlite ];
-        nativeBuildInputs = with pkgs; [ dub <<d-compiler>> ]; # [ dmd dub ]; [ ldc dub ]; [ gdc dub ];
-      };
-    <<flake_output_default>>
-  };
-}
-#+END_SRC
-
-***** flake 2
-
-#+NAME: flake_2
-#+HEADER: :tangle ../flake-2_.nix
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-{
-  description               = "a sisu like parser & document generator";
-  inputs.<<flake_inputs_nix>>
-  outputs = { <<flake_outputs>> }:
-    let
-      system = "x86_64-linux";
-      pkgs = import nixpkgs {
-        inherit system;
-      };
-      #lib = nixpkgs.lib;
-    in {
-      packages.x86_64-linux.spine = pkgs.stdenv.mkDerivation {
-        inherit system;
-        <<flake_metadata>>
-        inherit self;
-        src = self;
-        #shell = ./shell.nix;
-        shell = ./default.nix;
-        devEnv = ./devenv.nix;
-        <<flake_phases>>
-        buildInputs       = [ sqlite ];
-        nativeBuildInputs = with pkgs; [ dub <<d-compiler>> ]; # [ dub dmd ]; [ dub ldc ]; [ dub gdc ];
-      };
-      <<flake_output_default>>
-  };
-}
-#+END_SRC
-
-***** flake (multi-system)
-
-#+NAME: flake_multi_system_possible
-#+HEADER: :tangle ../flake-0-multi-system_.nix
-#+HEADER: :noweb yes
-#+BEGIN_SRC nix
-{
-  description                 = "a sisu like parser & document generator";
-  inputs.<<flake_inputs_nix>>
-  outputs = { <<flake_outputs>> }:
-    let
-      version                 = "<<spine_version_set>>";
-      supportedSystems        = [ "x86_64-linux" ]; # [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin"  ];
-      # helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ...  }'.
-      forAllSystems           = nixpkgs.lib.genAttrs supportedSystems;
-      nixpkgsFor              = forAllSystems (system: import nixpkgs { inherit system;  }); # nixpkgs instantiated for supported system types.
-      <<flake_devshells>>
-    in {
-      packages                = forAllSystems (system:
-        let
-          pkgs                = nixpkgsFor.${system};
-        in {
-          default             = pkgs.stdenv.mkDerivation {
-            pname             = "spine";
-            inherit version;
-            src               = self;
-            shell             = ./default.nix;
-            devEnv            = ./devenv.nix;
-            <<flake_phases>>
-            buildInputs       = [ sqlite ];
-            nativeBuildInputs = with pkgs; [ dub <<d-compiler>> ]; # [ dub dmd ]; [ dub ldc ]; [ dub gdc ];
-          };
-          #vendorSha256 = "sha256-0Q00000000000000000000000000000000000000000=";
-      });
-  };
-}
-#+END_SRC
-
 *** flake :flake:
 **** notes?
 
@@ -387,9 +342,14 @@ buildPhase = ''
   dub build --compiler=$DC --build=$DC_ --combined --skip-registry=all
   runHook postBuild
 '';
+<<flake_phases_other_than_build>>
+#+END_SRC
+
+#+NAME: flake_phases_other_than_build
+#+HEADER: :noweb yes
+#+BEGIN_SRC nix
 checkPhase = ''
   runHook preCheck
-  HOME="$PWD"
   dub test --combined --skip-registry=all
   runHook postCheck
 '';
@@ -578,12 +538,14 @@ src = fetchTarball {
 with pkgs;
 mkShell {
   buildInputs = [
+    #nix
     direnv
     nixVersions.unstable #nixFlakes
     nix-prefetch-git
     validatePkgConfig
     nix-tree jq nix-output-monitor
     git
+    gnumake
     ps
     ### d_build_related
     dub
@@ -665,6 +627,12 @@ mkShell {
       nix-build . --no-out-link | xargs -o nix-tree
       nix-tree --derivation .#default
 
+      nix flake update && nix flake check --show-trace && nix flake show && nix develop .#devShell
+      nix build .#default --print-build-logs
+
+      - nix build .#spine-dmd --print-build-logs
+      - nix build .#spine-ldc --print-build-logs
+      - nix build .#spine-gdc --print-build-logs
     "
     #echo "ldc `${pkgs.ldc}/bin/ldc2 -v`"
   '';