add cgit package

2 files changed, 138 insertions, 2 deletions

diff --git a/modules/git/cgit.nix b/modules/git/cgit.nix
index c54f19a..56112e9 100644
--- a/modules/git/cgit.nix
+++ b/modules/git/cgit.nix
@@ -2,11 +2,13 @@
 
 let
   repositoryPath = "/home/compromyse";
+  cgit = (pkgs.callPackage ../../packages/cgit.nix {});
 in {
   services.cgit."git.compromyse.xyz" = {
     enable = true;
     user = "root";
     group = "root";
+    package = cgit;
     scanPath = repositoryPath;
     settings = {
       root-title = "compromyse: CGIT";
@@ -15,9 +17,19 @@ in {
 
       enable-commit-graph = true;
       enable-follow-links = true;
-      source-filter = "${pkgs.cgit}/lib/cgit/filters/syntax-highlighting.py";
+      source-filter = "${cgit}/lib/cgit/filters/syntax-highlighting.py";
 
-      head-include=/config/modules/git/cgit_theme.css
+      head-include = "/config/modules/git/cgit_theme.css";
+      virtual-root = "/";
+      clone-prefix = "https://git.compromyse.xyz";
+
+      "mimetype.gif" = "image/gif";
+      "mimetype.html" = "text/html";
+      "mimetype.jpg" = "image/jpeg";
+      "mimetype.jpeg" = "image/jpeg";
+      "mimetype.pdf" = "application/pdf";
+      "mimetype.png" = "image/png";
+      "mimetype.svg" = "image/svg+xml";
     };
     nginx.virtualHost = "git.compromyse.xyz";
   };
diff --git a/packages/cgit.nix b/packages/cgit.nix
new file mode 100644
index 0000000..fac1c47
--- /dev/null
+++ b/packages/cgit.nix
@@ -0,0 +1,124 @@
+{
+  lib,
+  stdenv,
+  openssl,
+  zlib,
+  asciidoc,
+  libxml2,
+  libxslt,
+  docbook_xsl,
+  pkg-config,
+  coreutils,
+  gnused,
+  groff,
+  docutils,
+  gzip,
+  bzip2,
+  lzip,
+  xz,
+  zstd,
+  python3Packages,
+}:
+
+stdenv.mkDerivation {
+  pname = "cgit";
+  version = "1.2.3";
+
+  src = fetchurl {
+    url = "https://git.zx2c4.com/cgit/snapshot/${pname}-${version}.tar.xz";
+    sha256 = "193d990ym10qlslk0p8mjwp2j6rhqa7fq0y1iff65lvbyv914pss";
+  };
+
+  # cgit is tightly coupled with git and needs a git source tree to build.
+  # IMPORTANT: Remember to check which git version cgit needs on every version
+  # bump (look for "GIT_VER" in the top-level Makefile).
+  gitSrc = fetchurl {
+    url = "mirror://kernel/software/scm/git/git-2.25.1.tar.xz";
+    sha256 = "09lzwa183nblr6l8ib35g2xrjf9wm9yhk3szfvyzkwivdv69c9r2";
+  };
+
+  separateDebugInfo = true;
+
+  nativeBuildInputs = [
+    pkg-config
+    asciidoc
+  ]
+  ++ (with python3Packages; [
+    python
+    wrapPython
+  ]);
+  buildInputs = buildInputs ++ [
+    openssl
+    zlib
+    libxml2
+    libxslt
+    docbook_xsl
+  ];
+  pythonPath = with python3Packages; [
+    pygments
+    markdown
+  ];
+
+  postPatch = ''
+    sed -e 's|"gzip"|"${gzip}/bin/gzip"|' \
+        -e 's|"bzip2"|"${bzip2.bin}/bin/bzip2"|' \
+        -e 's|"lzip"|"${lzip}/bin/lzip"|' \
+        -e 's|"xz"|"${xz.bin}/bin/xz"|' \
+        -e 's|"zstd"|"${zstd}/bin/zstd"|' \
+        -i ui-snapshot.c
+
+    substituteInPlace filters/html-converters/man2html \
+      --replace 'groff' '${groff}/bin/groff'
+
+    substituteInPlace filters/html-converters/rst2html \
+      --replace 'rst2html.py' '${docutils}/bin/rst2html.py'
+  '';
+
+  # Give cgit a git source tree and pass configuration parameters (as make
+  # variables).
+  preBuild = ''
+    mkdir -p git
+    tar --strip-components=1 -xf "$gitSrc" -C git
+  '';
+
+  makeFlags = [
+    "prefix=$(out)"
+    "CGIT_SCRIPT_PATH=$(out)/cgit/"
+    "CC=${stdenv.cc.targetPrefix}cc"
+    "AR=${stdenv.cc.targetPrefix}ar"
+  ];
+
+  # Install manpage.
+  postInstall = ''
+    # xmllint fails:
+    #make install-man
+
+    # bypassing xmllint works:
+    a2x --no-xmllint -f manpage cgitrc.5.txt
+    mkdir -p "$out/share/man/man5"
+    cp cgitrc.5 "$out/share/man/man5"
+
+    wrapPythonProgramsIn "$out/lib/cgit/filters" "$out $pythonPath"
+
+    for script in $out/lib/cgit/filters/*.sh $out/lib/cgit/filters/html-converters/txt2html; do
+      wrapProgram $script --prefix PATH : '${
+        lib.makeBinPath [
+          coreutils
+          gnused
+        ]
+      }'
+    done
+  '';
+
+  stripDebugList = [ "cgit" ];
+
+  enableParallelBuilding = true;
+
+  meta = {
+    homepage = "https://git.zx2c4.com/cgit/about/";
+    description = "Web frontend for git repositories";
+    license = lib.licenses.gpl2;
+    platforms = lib.platforms.linux;
+    maintainers = maintainers ++ (with lib.maintainers; [ qyliss ]);
+  };
+}