kicad: unite unstable.nix with default.nix

use latest libraries for unstable
move all revs and hashes to default.nix

thanks TQ for getting me through this blockage

pkgs/applications/science/electronics/kicad/libraries.nix

@@ -1,36 +1,44 @@
-{ stdenv, lib, fetchFromGitHub, cmake, gettext
-, with3d ? true
+{ lib, stdenv, fetchFromGitHub, cmake, gettext
+, version
+, libSources
 }:
 
+# callPackage libraries {
+#   version = "unstable";
+#   libs.symbols = {
+#     rev = "09f9..";
+#     sha256 = "...";
+#   };
+# };
 with lib;
 let
-  version = "5.1.5";
-  mkLib = version: name: sha256: attrs: stdenv.mkDerivation ({
-    name = "kicad-${name}-${version}";
-    src = fetchFromGitHub {
-      owner = "KiCad";
-      repo = "kicad-${name}";
-      rev = version;
-      inherit sha256 name;
-    };
-    nativeBuildInputs = [ cmake ];
-  } // attrs);
+  mkLib = name: attrs:
+    stdenv.mkDerivation ({
+      name = "kicad-${name}-${version}";
+      src = fetchFromGitHub ({
+        owner = "KiCad";
+        repo = "kicad-${name}";
+        rev = version;
+        inherit name;
+      } // (libSources.${name} or {}));
+      nativeBuildInputs = [ cmake ];
+    } // attrs);
 in
 {
-  symbols = mkLib "${version}" "symbols" "048b07ffsaav1ssrchw2p870lvb4rsyb5vnniy670k7q9p16qq6h" {
+  symbols = mkLib "symbols" {
     meta.license = licenses.cc-by-sa-40;
   };
-  templates = mkLib "${version}" "templates" "0cs3bm3zb5ngw5ldn0lzw5bvqm4kvcidyrn76438alffwiz2b15g" {
+  templates = mkLib "templates" {
     meta.license = licenses.cc-by-sa-40;
   };
-  footprints = mkLib "${version}" "footprints" "1c4whgn14qhz4yqkl46w13p6rpv1k0hsc9s9h9368fxfcz9knb2j" {
+  footprints = mkLib "footprints" {
     meta.license = licenses.cc-by-sa-40;
   };
-  i18n = mkLib "${version}" "i18n" "1rfpifl8vky1gba2angizlb2n7mwmsiai3r6ip6qma60wdj8sbd3" {
+  i18n = mkLib "i18n" {
     buildInputs = [ gettext ];
     meta.license = licenses.gpl2; # https://github.com/KiCad/kicad-i18n/issues/3
   };
-  packages3d = mkLib "${version}" "packages3d" "0cff2ms1bsw530kqb1fr1m2pjixyxzwa81mxgac3qpbcf8fnpvaz" {
+  packages3d = mkLib "packages3d" {
     hydraPlatforms = []; # this is a ~1 GiB download, occupies ~5 GiB in store
     meta.license = licenses.cc-by-sa-40;
   };