ghostty/nix/libghostty-vt.nix

{
  callPackage,
  git,
  lib,
  llvmPackages,
  pkg-config,
  runCommand,
  stdenv,
  testers,
  versionCheckHook,
  zig_0_15,
  revision ? "dirty",
  optimize ? "Debug",
  simd ? true,
}:
stdenv.mkDerivation (finalAttrs: {
  pname = "libghostty-vt";
  version = "0.1.0-dev+${revision}-nix";

  # We limit source like this to try and reduce the amount of rebuilds as possible
  # thus we only provide the source that is needed for the build
  #
  # NOTE: as of the current moment only linux files are provided,
  # since darwin support is not finished
  src = lib.fileset.toSource {
    root = ../.;
    fileset = lib.fileset.intersection (lib.fileset.fromSource (lib.sources.cleanSource ../.)) (
      lib.fileset.unions [
        ../include
        ../pkg
        ../src
        ../vendor
        ../build.zig
        ../build.zig.zon
        ../build.zig.zon.nix
      ]
    );
  };

  deps = callPackage ../build.zig.zon.nix {name = "${finalAttrs.pname}-cache-${finalAttrs.version}";};

  nativeBuildInputs = [
    git
    pkg-config
    zig_0_15
  ];

  buildInputs = [];

  doCheck = false;
  dontSetZigDefaultFlags = true;

  zigBuildFlags = [
    "--system"
    "${finalAttrs.deps}"
    "-Dlib-version-string=${finalAttrs.version}"
    "-Dcpu=baseline"
    "-Doptimize=${optimize}"
    "-Dapp-runtime=none"
    "-Demit-lib-vt=true"
    "-Dsimd=${lib.boolToString simd}"
  ];
  zigCheckFlags = finalAttrs.zigBuildFlags ++ ["test-lib-vt"];

  outputs = [
    "out"
    "dev"
  ];

  postInstall = ''
    mkdir -p "$dev/lib"
    mv "$out/lib/libghostty-vt.a" "$dev/lib"
    rm "$out/lib/libghostty-vt.so"
    mv "$out/include" "$dev"
    mv "$out/share" "$dev"

    ln -sf "$out/lib/libghostty-vt.so.${lib.versions.major finalAttrs.version}"  "$dev/lib/libghostty-vt.so"
  '';

  postFixup = ''
    substituteInPlace "$dev/share/pkgconfig/libghostty-vt.pc" \
      --replace-fail "$out" "$dev"
    substituteInPlace "$dev/share/pkgconfig/libghostty-vt-static.pc" \
      --replace-fail "$out" "$dev"
  '';

  passthru.tests = {
    sanity-check = let
      version = "${lib.versions.major finalAttrs.version}.${lib.versions.minor finalAttrs.version}.${lib.versions.patch finalAttrs.version}";
    in
      runCommand "sanity-check" {} (builtins.concatStringsSep "\n" [
        ''
          ${lib.getExe' stdenv.cc "nm"} "${finalAttrs.finalPackage}/lib/libghostty-vt.so.${version}" | grep -q 'T ghostty_terminal_new'
          ${lib.getExe' stdenv.cc "nm"} "${finalAttrs.finalPackage.dev}/lib/libghostty-vt.a" | grep -q 'T ghostty_terminal_new'
        ''
        (
          lib.optionalString simd
          ''
            ${lib.getExe' stdenv.cc "nm"} "${finalAttrs.finalPackage.dev}/lib/libghostty-vt.a" | grep -q 'T .*simdutf'
            ${lib.getExe' stdenv.cc "nm"} "${finalAttrs.finalPackage.dev}/lib/libghostty-vt.a" | grep -q 'T .*3hwy'
          ''
        )
        ''
          touch "$out"
        ''
      ]);
    pkg-config = testers.hasPkgConfigModules {
      package = finalAttrs.finalPackage.dev;
    };
    pkg-config-libs =
      runCommand "pkg-config-libs" {
        nativeBuildInputs = [pkg-config];
      } ''
        export PKG_CONFIG_PATH="${finalAttrs.finalPackage.dev}/share/pkgconfig"

        pkg-config --libs --static libghostty-vt | grep -q -- '-lghostty-vt'
        pkg-config --libs --static libghostty-vt-static | grep -q -- '${finalAttrs.finalPackage.dev}/lib/libghostty-vt.a'

        touch "$out"
      '';
    build-with-shared = stdenv.mkDerivation {
      name = "build-with-shared";
      src = ./test-src;
      doInstallCheck = true;
      nativeBuildInputs = [pkg-config];
      buildInputs = [finalAttrs.finalPackage];
      buildPhase = ''
        runHook preBuildHooks

        cc -o test test_libghostty_vt.c \
          ''$(pkg-config --cflags --libs libghostty-vt) \
          -Wl,-rpath,"${finalAttrs.finalPackage}/lib"

        runHook postBuildHooks
      '';
      installPhase = ''
        runHook preInstallHooks

        mkdir -p "$out/bin";
        cp -a test "$out/bin/test";

        runHook postInstallHooks
      '';
      installCheckPhase = ''
        runHook preInstallCheckHooks

        "$out/bin/test" | grep -q "SIMD: ${
          if simd
          then "yes"
          else "no"
        }"
        ldd "$out/bin/test" 2>/dev/null | grep -q libghostty-vt

        runHook postInstallCheckHooks
      '';
      meta = {
        mainProgram = "test";
      };
    };
    build-with-static = stdenv.mkDerivation {
      name = "build-with-static";
      src = ./test-src;
      doInstallCheck = true;
      nativeBuildInputs = [pkg-config];
      buildInputs = [finalAttrs.finalPackage llvmPackages.libcxxClang];
      buildPhase = ''
        runHook preBuildHooks

        cc -o test test_libghostty_vt.c \
          ''$(pkg-config --cflags --libs --static libghostty-vt-static)

        runHook postBuildHooks
      '';
      installPhase = ''
        runHook preInstallHooks

        mkdir -p "$out/bin";
        cp -a test "$out/bin/test";

        runHook postInstallHooks
      '';
      installCheckPhase = ''
        runHook preInstallCheckHooks

        "$out/bin/test" | grep -q "SIMD: ${
          if simd
          then "yes"
          else "no"
        }"
        ! ldd "$out/bin/test" 2>/dev/null | grep -q libghostty-vt

        runHook postInstallCheckHooks
      '';
      meta = {
        mainProgram = "test";
      };
    };
    build-example-c-vt-build-info = stdenv.mkDerivation {
      name = "build-example-c-vt-build-info";
      version = finalAttrs.version;
      src = ../example/c-vt-build-info/src;
      doInstallCheck = true;
      nativeBuildInputs = [pkg-config];
      nativeInstallCheckInputs = [versionCheckHook];
      buildInputs = [finalAttrs.finalPackage];
      buildPhase = ''
        runHook preBuildHooks

        cc -o test main.c \
          ''$(pkg-config --cflags --libs libghostty-vt) \
          -Wl,-rpath,"${finalAttrs.finalPackage}/lib"

        runHook postBuildHooks
      '';
      installPhase = ''
        runHook preInstallHooks

        mkdir -p "$out/bin";
        cp -a test "$out/bin/test";

        runHook postInstallHooks
      '';
      installCheckPhase = ''
        runHook preInstallCheckHooks

        ldd "$out/bin/test" 2>/dev/null | grep -q libghostty-vt

        runHook postInstallCheckHooks
      '';
      meta = {
        mainProgram = "test";
      };
    };
  };

  meta = {
    homepage = "https://ghostty.org";
    license = lib.licenses.mit;
    platforms = zig_0_15.meta.platforms;
    pkgConfigModules = [
      "libghostty-vt"
      "libghostty-vt-static"
    ];
  };
})