magic-vlsi: fix darwin (#421821)

pkgs/by-name/ma/magic-vlsi/package.nix

@@ -1,32 +1,47 @@
 {
   lib,
   stdenv,
-  fetchurl,
+  fetchFromGitHub,
+  git,
   python3,
   m4,
   cairo,
   libX11,
+  mesa,
   mesa_glu,
   ncurses,
   tcl,
   tcsh,
   tk,
+  fixDarwinDylibNames,
 }:
 
 stdenv.mkDerivation rec {
   pname = "magic-vlsi";
-  version = "8.3.529";
+  version = "8.3.530";
 
-  src = fetchurl {
-    url = "http://opencircuitdesign.com/magic/archive/magic-${version}.tgz";
-    sha256 = "sha256-O5NauR2TYRS2bzEVQlhCqkshlojIGqM1Y3KLN00YP40=";
+  src = fetchFromGitHub {
+    owner = "RTimothyEdwards";
+    repo = "magic";
+    tag = "${version}";
+    sha256 = "sha256-OQPOEDcU0BuGdI7+saOTntosa8+mQcGbZuwzIlvRBSk=";
+    leaveDotGit = true;
   };
 
-  nativeBuildInputs = [ python3 ];
+  nativeBuildInputs =
+    [
+      python3
+      git
+    ]
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
+      fixDarwinDylibNames
+    ];
+
   buildInputs = [
     cairo
     libX11
     m4
+    mesa
     mesa_glu
     ncurses
     tcl
@@ -46,7 +61,35 @@ stdenv.mkDerivation rec {
     patchShebangs scripts/*
   '';
 
+  postInstall = ''
+    # Fix necessary files missing in sys directory
+    mkdir -p $out/lib/magic/sys
+
+    shopt -s nullglob
+
+    for techfile in scmos/*.tech; do
+      install -Dm644 "$techfile" $out/lib/magic/sys/$(basename "$techfile")
+    done
+
+    for dstylefile in scmos/*.dstyle; do
+      install -Dm644 "$dstylefile" $out/lib/magic/sys/$(basename "$dstylefile")
+    done
+
+    for cmapfile in scmos/*.cmap; do
+      install -Dm644 "$cmapfile" $out/lib/magic/sys/$(basename "$cmapfile")
+    done
+  '';
+
+  postFixup = lib.optionalString stdenv.hostPlatform.isDarwin ''
+    # Fix dylib paths on macOS
+    install_name_tool -add_rpath ${mesa.out}/lib $out/lib/magic/tcl/tclmagic.dylib
+    install_name_tool -add_rpath ${mesa_glu.out}/lib $out/lib/magic/tcl/tclmagic.dylib
+    install_name_tool -add_rpath ${mesa.out}/lib $out/lib/magic/tcl/magicexec
+    install_name_tool -add_rpath ${mesa_glu.out}/lib $out/lib/magic/tcl/magicexec
+  '';
+
   env.NIX_CFLAGS_COMPILE = "-Wno-implicit-function-declaration";
+  env.NIX_LDFLAGS = lib.optionalString stdenv.hostPlatform.isDarwin "-headerpad_max_install_names";
 
   meta = with lib; {
     description = "VLSI layout tool written in Tcl";