nix-build cleanup, external sources localized

- clean up as external sources kept locally, in
  ./src/ext_depends/
- remove dub2nix dependency, no longer needed/used

1 files changed, 0 insertions, 82 deletions

diff --git a/src/build_depends/dub2nix/README.md b/src/build_depends/dub2nix/README.md
deleted file mode 100644
index bfb8e3a..0000000
--- a/src/build_depends/dub2nix/README.md
+++ /dev/null
@@ -1,82 +0,0 @@
-# dub2nix
-CLI tool to create Nix expressions for D-lang Dub projects.
-
-![CI](https://github.com/lionello/dub2nix/workflows/CI/badge.svg)
-
-## Installation
-Install with `nix-env`:
-```sh
-nix-env -if https://github.com/lionello/dub2nix/archive/master.tar.gz
-```
-or add to your `shell.nix` and run `nix-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 = [
-    dub2nix # dub dmd rdmd ldc etc..
-  ];
-}
-```
-
-## Development
-Do `git clone` and `nix-shell` to build with `dub`:
-```sh
-nix-shell
-dub
-```
-Alternatively, use `direnv`:
-```sh
-echo use nix >> .envrc
-direnv allow
-dub
-```
-
-## Usage
-```
-Usage: dub2nix [OPTIONS] COMMAND
-
-Create Nix derivations for Dub package dependencies.
-
-Commands:
-  save         Write Nix files for Dub project
-
-Options:
--i     --input Path of selections JSON; defaults to ./dub.selections.json
--o    --output Output Nix file for Dub project
--r  --registry URL to Dub package registry; default http://code.dlang.org/packages/
--d --deps-file Output Nix file with dependencies; defaults to ./dub.selections.nix
--h      --help This help information.
-```
-First, use `dub build` to generate the `dub.selections.json` for your Dub project.
-Then, run `dub2nix save` to read the `dub.selections.json` in the current folder and write a new file `dub.selections.nix`.
-
-This `dub.selections.nix` is used in `mkDubDerivation` (from `mkDub.nix`) to create a new derivation for your Dub project:
-```nix
-{pkgs}:
-with (import ./mkDub.nix {
-    inherit pkgs;
-});
-mkDubDerivation {
-    version = "0.1.0"; # optional
-    src = ./.;
-}
-```
-
-When your project has no dependencies at all, this will fail because `dub.selections.nix` is missing. Set `deps` to override the dependencies:
-```nix
-{pkgs}:
-with (import ./mkDub.nix {
-    inherit pkgs;
-});
-mkDubDerivation {
-    src = ./.;
-    deps = [];
-}
-```
-
-Use the `--output` option to write a `.nix` file with a skeleton derivation for your dub project. This will also create the `mkDub.nix` file for importing into the derivation.