feat(third_party/cgit): Add derivation to build cgit r/380

This is pretty much exactly the derivation from nixpkgs, with some
things removed to reduce the closure size (e.g. the various formatters
used in the default cgit version, which are replaced by cheddar in my
setup).

2 files changed, 38 insertions, 0 deletions

diff --git a/third_party/cgit/.skip-subtree b/third_party/cgit/.skip-subtree
new file mode 100644
index 000000000000..c108a7d34f2b
--- /dev/null
+++ b/third_party/cgit/.skip-subtree
@@ -0,0 +1 @@
+Subtrees of this directory belong to cgit (third-party).
diff --git a/third_party/cgit/default.nix b/third_party/cgit/default.nix
new file mode 100644
index 000000000000..7b1dfa893906
--- /dev/null
+++ b/third_party/cgit/default.nix
@@ -0,0 +1,37 @@
+{ pkgs, ... }:
+
+let
+  inherit (pkgs.third_party) stdenv gzip bzip2 xz luajit zlib autoconf openssl pkgconfig;
+in stdenv.mkDerivation rec {
+  pname = "cgit";
+  version = "master";
+  src = ./.;
+
+  nativeBuildInputs = [ autoconf pkgconfig ];
+  buildInputs = [ openssl zlib luajit ];
+
+  postPatch = ''
+    sed -e 's|"gzip"|"${gzip}/bin/gzip"|' \
+        -e 's|"bzip2"|"${bzip2.bin}/bin/bzip2"|' \
+        -e 's|"xz"|"${xz.bin}/bin/xz"|' \
+        -i ui-snapshot.c
+  '';
+
+  # Give cgit the git source tree from the depot. Note that the
+  # versions should be kept in sync (see the Makefile for the current
+  # git version).
+  preBuild = ''
+    rm -rf git # remove submodule dir ...
+    cp -r --no-preserve=ownership,mode ${pkgs.third_party.git.src} git
+    makeFlagsArray+=(prefix="$out" CGIT_SCRIPT_PATH="$out/cgit/")
+  '';
+
+  meta = {
+    homepage = https://git.zx2c4.com/cgit/about/;
+    repositories.git = git://git.zx2c4.com/cgit;
+    description = "Web frontend for git repositories";
+    license = stdenv.lib.licenses.gpl2;
+    platforms = stdenv.lib.platforms.linux;
+    maintainers = with stdenv.lib.maintainers; [ bjornfor ];
+  };
+}