From a8b43aaa80ef3d27e20934af85a88acdffc0163c Mon Sep 17 00:00:00 2001
From: patrick-scho
Date: Sun, 30 Nov 2025 23:30:17 +0100
Subject: add flake

---
 common.nix | 121 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix  |  50 +++++++++++++++++++++++++
 2 files changed, 171 insertions(+)
 create mode 100644 common.nix
 create mode 100644 flake.nix

diff --git a/common.nix b/common.nix
new file mode 100644
index 0000000..9cc41e6
--- /dev/null
+++ b/common.nix
@@ -0,0 +1,121 @@
+{
+  pname,
+  version,
+  src,
+  gitSrc,
+  buildInputs ? [ ],
+  homepage,
+  description,
+  maintainers,
+  passthru ? { },
+}:
+
+{
+  lib,
+  stdenv,
+  openssl,
+  zlib,
+  asciidoc,
+  libxml2,
+  libxslt,
+  docbook_xsl,
+  pkg-config,
+  coreutils,
+  gnused,
+  groff,
+  docutils,
+  gzip,
+  bzip2,
+  lzip,
+  xz,
+  zstd,
+  python3Packages,
+}:
+
+stdenv.mkDerivation {
+  inherit
+    pname
+    version
+    src
+    gitSrc
+    passthru
+    ;
+
+  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;
+}
+
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..a0d8c77
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,50 @@
+{
+  description = "A Nix Flake for a fork of cgit";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs }:
+    let
+      forAllSystems = nixpkgs.lib.genAttrs [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+    in
+    {
+      packages = forAllSystems (system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+        in
+        {
+          default = pkgs.callPackage ({ lib, fetchurl, callPackage, luajit, nixosTests }:
+            # This logic was previously in package.nix
+            callPackage (import ./common.nix rec {
+              pname = "cgit-fork";
+              version = "1.2.3";
+
+              src = ./.;
+
+              # cgit needs the git source code to compile.
+              # Ensure this matches the version found in the Makefile of your fork.
+              gitSrc = fetchurl {
+                url = "mirror://kernel/software/scm/git/git-2.25.1.tar.xz";
+                sha256 = "09lzwa183nblr6l8ib35g2xrjf9wm9yhk3szfvyzkwivdv69c9r2";
+              };
+
+              buildInputs = [ luajit ];
+
+              passthru.tests = { inherit (nixosTests) cgit; };
+
+              homepage = "https://git.zx2c4.com/cgit/about/";
+              description = "Web frontend for git repositories (Custom Fork)";
+              maintainers = with lib.maintainers; [  ];
+            }) { }
+          ) { };
+        });
+    };
+}
+
-- 
cgit v1.2.3