gxmatcheq: fix build (#455874)

pkgs/by-name/gx/gxmatcheq-lv2/package.nix

@@ -1,6 +1,7 @@
 {
   lib,
   stdenv,
+  gcc13Stdenv,
   fetchFromGitHub,
   xorg,
   xorgproto,
@@ -8,16 +9,20 @@
   lv2,
   pkg-config,
 }:
-
-stdenv.mkDerivation rec {
+let
+  # see: https://github.com/brummer10/GxMatchEQ.lv2/issues/8
+  # Use gcc13 on Linux, but default stdenv (clang) elsewhere
+  buildStdenv = if stdenv.hostPlatform.isLinux then gcc13Stdenv else stdenv;
+in
+buildStdenv.mkDerivation (finalAttrs: {
   pname = "GxMatchEQ.lv2";
   version = "0.1";
 
   src = fetchFromGitHub {
     owner = "brummer10";
     repo = "GxMatchEQ.lv2";
-    rev = "V${version}";
-    sha256 = "0azdmgzqwjn26nx38iw13666a1i4y2bv39wk89pf6ihdi46klf72";
+    rev = "V${finalAttrs.version}";
+    hash = "sha256-4jg6DYkNRuNuQpOnsZfwJAZljBmBRzS6NcJKjv+r7Ss=";
   };
 
   nativeBuildInputs = [ pkg-config ];
@@ -33,10 +38,10 @@ stdenv.mkDerivation rec {
 
   installFlags = [ "INSTALL_DIR=$(out)/lib/lv2" ];
 
-  meta = with lib; {
+  meta = {
     homepage = "https://github.com/brummer10/GxMatchEQ.lv2";
     description = "Matching Equalizer to apply EQ curve from one source to another source";
-    maintainers = [ maintainers.magnetophon ];
-    license = licenses.gpl3;
+    maintainers = with lib.maintainers; [ magnetophon ];
+    license = lib.licenses.gpl3;
   };
-}
+})