gl3w: init at unstable-2022-03-24

pkgs/development/libraries/gl3w/default.nix

···
+{ lib, stdenv, fetchFromGitHub, python3, cmake, libglvnd, libGLU }:
+
+stdenv.mkDerivation rec {
+  pname = "gl3w";
+  version = "unstable-2022-03-24";
+
+  src = fetchFromGitHub {
+    owner = "skaslev";
+    repo = pname;
+    rev = "5f8d7fd191ba22ff2b60c1106d7135bb9a335533";
+    hash = "sha256-qV/PZmaP5iCHhIzTA2bE4d1RMB6LzRbTsB5gWVvi9bU=";
+  };
+
+  nativeBuildInputs = [ python3 cmake ];
+  # gl3w installs a CMake config that when included expects to be able to
+  # build and link against both of these libraries
+  # (the gl3w generated C file gets compiled into the downstream target)
+  propagatedBuildInputs = [ libglvnd libGLU ];
+
+  dontUseCmakeBuildDir = true;
+
+  # These files must be copied rather than linked since they are considered
+  # outputs for the custom command, and CMake expects to be able to touch them
+  preConfigure = ''
+    mkdir -p include/{GL,KHR}
+    cp ${libglvnd.dev}/include/GL/glcorearb.h include/GL/glcorearb.h
+    cp ${libglvnd.dev}/include/KHR/khrplatform.h include/KHR/khrplatform.h
+  '';
+
+  meta = with lib; {
+    description = "Simple OpenGL core profile loading";
+    homepage = "https://github.com/skaslev/gl3w";
+    license = licenses.unlicense;
+    maintainers = with maintainers; [ lilyinstarlight ];
+    platforms = platforms.unix;
+  };
+}

pkgs/top-level/all-packages.nix

···
   # A GMP fork
   mpir = callPackage ../development/libraries/mpir {};
 
+  gl3w = callPackage ../development/libraries/gl3w { };
+
   gnatcoll-core = callPackage ../development/libraries/ada/gnatcoll/core.nix { };
 
   # gnatcoll-bindings repository