releng: move officialRelease to version.json

This was causing a few bits of suffering downstream, in particular, in
the NixOS module, which, after this change, can have the
`officialRelease` stuff in *it* completely deleted since we now have
correct defaulting in package.nix for it.

It also eliminates some automated editing of Nix files, which is
certainly always welcome to eliminate.

Fixes: https://git.lix.systems/lix-project/lix/issues/406
Change-Id: Id12f3018cff4633e379dbfcbe26b7bc84922bdaf

1 files changed, 4 insertions, 5 deletions

diff --git a/package.nix b/package.nix
index 9f983f66b..1b711585d 100644
--- a/package.nix
+++ b/package.nix
@@ -52,7 +52,7 @@
 
   pname ? "lix",
   versionSuffix ? "",
-  officialRelease ? false,
+  officialRelease ? __forDefaults.versionJson.official_release,
   # Set to true to build the release notes for the next release.
   buildUnreleasedNotes ? true,
   internalApiDocs ? false,
@@ -68,6 +68,8 @@
   __forDefaults ? {
     canRunInstalled = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
 
+    versionJson = builtins.fromJSON (builtins.readFile ./version.json);
+
     boehmgc-nix = boehmgc.override { enableLargeConfig = true; };
 
     editline-lix = editline.overrideAttrs (prev: {
@@ -83,8 +85,7 @@ let
   inherit (lib) fileset;
   inherit (stdenv) hostPlatform buildPlatform;
 
-  versionJson = builtins.fromJSON (builtins.readFile ./version.json);
-  version = versionJson.version + versionSuffix;
+  version = __forDefaults.versionJson.version + versionSuffix;
 
   aws-sdk-cpp-nix = aws-sdk-cpp.override {
     apis = [
@@ -381,8 +382,6 @@ stdenv.mkDerivation (finalAttrs: {
       pegtl
       ;
 
-    inherit officialRelease;
-
     # The collection of dependency logic for this derivation is complicated enough that
     # it's easier to parameterize the devShell off an already called package.nix.
     mkDevShell =