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-rw-r--r--pkgs/development/compilers/crystal/default.nix3
1 files changed, 3 insertions, 0 deletions
diff --git a/pkgs/development/compilers/crystal/default.nix b/pkgs/development/compilers/crystal/default.nix
index 9f2e17dad09..022c4e54312 100644
--- a/pkgs/development/compilers/crystal/default.nix
+++ b/pkgs/development/compilers/crystal/default.nix
@@ -199,6 +199,9 @@ let
         wrapProgram $bin/bin/crystal \
           --suffix PATH : ${lib.makeBinPath [ pkg-config llvmPackages.clang which ]} \
           --suffix CRYSTAL_PATH : lib:$lib/crystal \
+          --suffix PKG_CONFIG_PATH : ${
+            lib.makeSearchPathOutput "dev" "lib/pkgconfig" finalAttrs.buildInputs
+          } \
           --suffix CRYSTAL_LIBRARY_PATH : ${
             lib.makeLibraryPath finalAttrs.buildInputs
           }