clean up packages and overlays

overlays.nix

@@ -0,0 +1,41 @@
+{
+  tubslatex = final: prev: {
+    # Based on https://gist.github.com/clefru/9ed1186bf0b76d27e0ad20cbd9966b87
+    tubslatex =
+      prev.lib.overrideDerivation
+        (prev.texlive.combine {
+          inherit (prev.texlive) scheme-full;
+          tubslatex.pkgs = [ (prev.callPackage ../pkgs/tubslatex { }) ];
+        })
+        (oldAttrs: {
+          postBuild =
+            ''
+              # Save the udpmap.cfg because texlive.combine removes it.
+              cat $out/share/texmf/web2c/updmap.cfg > $out/share/texmf/web2c/updmap.cfg.1
+            ''
+            + oldAttrs.postBuild
+            + ''
+              # Move updmap.cfg into its original place and rerun mktexlsr, so that kpsewhich finds it
+              rm $out/share/texmf/web2c/updmap.cfg || true
+              cat $out/share/texmf/web2c/updmap.cfg.1 > $out/share/texmf/web2c/updmap.cfg
+              rm $out/share/texmf/web2c/updmap.cfg.1
+              perl `type -P mktexlsr.pl` $out/share/texmf
+              yes | perl `type -P updmap.pl` --sys --syncwithtrees --force || true
+              perl `type -P updmap.pl` --sys --enable Map=NexusProSerif.map --enable Map=NexusProSans.map
+              # Regenerate .map files.
+              perl `type -P updmap.pl` --sys
+            '';
+        });
+  };
+
+  kanboard = final: prev: {
+    kanboard = prev.kanboard.overrideAttrs (oldAttrs: {
+      src = prev.fetchFromGitHub {
+        owner = "kanboard";
+        repo = "kanboard";
+        rev = "v${oldAttrs.version}";
+        sha256 = "sha256-WG2lTPpRG9KQpRdb+cS7CqF4ZDV7JZ8XtNqAI6eVzm0=";
+      };
+    });
+  };
+}