squash! feat: Add a function for building ELPA-compatible archives

Author: akirak

pkgs/build-support/elisp/convertToElpaArchive.nix

@@ -5,7 +5,7 @@
 }:
 {
   ename,
-  version,
+  version ? null,
   meta,
   sourceInfo ? null,
   packageRequires,
@@ -29,14 +29,16 @@ let
   commitInfo = lib.optionalString (sourceInfo != null && sourceInfo ? rev) ''
     :commit "${sourceInfo.rev}"
   '';
+
+  versionString = if version != null then version else "0";
 in
-runCommand "${ename}-${version}"
+runCommand "${ename}-${versionString}"
   {
     buildInputs = lib.optional hasInfo texinfo;
 
     pkgDescription = ''
-      (define-package "${ename}" "${version}" "${meta.description}"
-        '${attrsToLispAlist packageRequires}
+      (define-package "${ename}" "${versionString}" "${meta.description}"
+        '${attrsToLispAlist (builtins.mapAttrs (_: v: if v != null then v else "0") packageRequires)}
         ${commitInfo})
       ;; Local Variables:
       ;; no-byte-compile: t