shaderc: fix pc file generation

Signed-off-by: Marcin Serwin <marcin@serwin.dev>

pkgs/by-name/sh/shaderc/fix-pc-file-generation.patch

@@ -0,0 +1,67 @@
+diff --git a/cmake/shaderc.pc.in b/cmake/shaderc.pc.in
+index 6d217bf..bb37c29 100644
+--- a/cmake/shaderc.pc.in
++++ b/cmake/shaderc.pc.in
+@@ -1,7 +1,7 @@
+ prefix=@CMAKE_INSTALL_PREFIX@
+ exec_prefix=${prefix}
+-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
++libdir=@PKG_CONFIG_LIBDIR@
++includedir=@PKG_CONFIG_INCLUDEDIR@
+ 
+ Name: shaderc
+ Description: Tools and libraries for Vulkan shader compilation
+diff --git a/cmake/shaderc_combined.pc.in b/cmake/shaderc_combined.pc.in
+index 6d217bf..bb37c29 100644
+--- a/cmake/shaderc_combined.pc.in
++++ b/cmake/shaderc_combined.pc.in
+@@ -1,7 +1,7 @@
+ prefix=@CMAKE_INSTALL_PREFIX@
+ exec_prefix=${prefix}
+-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
++libdir=@PKG_CONFIG_LIBDIR@
++includedir=@PKG_CONFIG_INCLUDEDIR@
+ 
+ Name: shaderc
+ Description: Tools and libraries for Vulkan shader compilation
+diff --git a/cmake/shaderc_static.pc.in b/cmake/shaderc_static.pc.in
+index 6d217bf..bb37c29 100644
+--- a/cmake/shaderc_static.pc.in
++++ b/cmake/shaderc_static.pc.in
+@@ -1,7 +1,7 @@
+ prefix=@CMAKE_INSTALL_PREFIX@
+ exec_prefix=${prefix}
+-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
++libdir=@PKG_CONFIG_LIBDIR@
++includedir=@PKG_CONFIG_INCLUDEDIR@
+ 
+ Name: shaderc
+ Description: Tools and libraries for Vulkan shader compilation
+diff --git a/cmake/write_pkg_config.cmake b/cmake/write_pkg_config.cmake
+index d367ce3..18502ee 100644
+--- a/cmake/write_pkg_config.cmake
++++ b/cmake/write_pkg_config.cmake
+@@ -16,16 +16,18 @@
+ file(STRINGS ${CHANGES_FILE} CHANGES_CONTENT)
+ string(
+ REGEX
+-  MATCH "v[0-9]+(.[0-9]+)?(-dev)? [0-9]+-[0-9]+-[0-9]+"
++  MATCH "v[0-9]+(.[0-9]+)?(-dev)?"
+   FIRST_VERSION_LINE
+   ${CHANGES_CONTENT})
+ string(
+ REGEX
+-  REPLACE "^v([^ ]+) .+$" "\\1"
++  REPLACE "^v([^ ]+)$" "\\1"
+   CURRENT_VERSION
+   "${FIRST_VERSION_LINE}")
+ # If this is a development version, replace "-dev" by ".0" as pkg-config nor
+ # CMake support "-dev" in the version.
+ # If it's not a "-dev" version then ensure it ends with ".1"
+ string(REGEX REPLACE "-dev.1" ".0" CURRENT_VERSION "${CURRENT_VERSION}.1")
++cmake_path(APPEND PKG_CONFIG_LIBDIR "\${exec_prefix}" "${CMAKE_INSTALL_LIBDIR}")
++cmake_path(APPEND PKG_CONFIG_INCLUDEDIR "\${prefix}" "${CMAKE_INSTALL_INCLUDEDIR}")
+ configure_file(${TEMPLATE_FILE} ${OUT_FILE} @ONLY)

pkgs/by-name/sh/shaderc/package.nix

@@ -10,6 +10,7 @@
   cctools,
   glslang,
   spirv-tools,
+  testers,
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "shaderc";
@@ -36,13 +37,13 @@ stdenv.mkDerivation (finalAttrs: {
       spirv-tools-version = spirv-tools.version;
       glslang-version = glslang.version;
     })
+
+    # https://github.com/google/shaderc/pull/1529
+    ./fix-pc-file-generation.patch
   ];
 
   postPatch = ''
     patchShebangs --build utils/
-
-    substituteInPlace cmake/*.pc.in \
-      --replace-fail $'{prefix}/@CMAKE_INSTALL_' '@CMAKE_INSTALL_FULL_'
   '';
 
   nativeBuildInputs = [
@@ -70,11 +71,22 @@ stdenv.mkDerivation (finalAttrs: {
   versionCheckProgramArg = "--version";
   doInstallCheck = true;
 
+  passthru.tests.pkg-config = testers.hasPkgConfigModules {
+    package = finalAttrs.finalPackage;
+    # The version in pc files has `.1` appended to indicate that it's not a dev version
+    versionCheck = false;
+  };
+
   meta = {
     description = "Collection of tools, libraries and tests for shader compilation";
     inherit (finalAttrs.src.meta) homepage;
     license = lib.licenses.asl20;
     platforms = lib.platforms.all;
     mainProgram = "glslc";
+    pkgConfigModules = [
+      "shaderc_combined"
+      "shaderc"
+      "shaderc_static"
+    ];
   };
 })