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

6 files changed, 22 insertions, 15 deletions

diff --git a/flake.nix b/flake.nix
index 440320afa..d2173cf47 100644
--- a/flake.nix
+++ b/flake.nix
@@ -59,7 +59,8 @@
         (Run `touch .nocontribmsg` to hide this message.)
       '';
 
-      officialRelease = false;
+      versionJson = builtins.fromJSON (builtins.readFile ./version.json);
+      officialRelease = versionJson.official_release;
 
       # Set to true to build the release notes for the next release.
       buildUnreleasedNotes = true;
@@ -419,7 +420,7 @@
             pkgs: stdenv:
             let
               nix = pkgs.callPackage ./package.nix {
-                inherit stdenv officialRelease versionSuffix;
+                inherit stdenv versionSuffix;
                 busybox-sandbox-shell = pkgs.busybox-sandbox-shell or pkgs.default-busybox-sandbox;
                 internalApiDocs = false;
               };
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 =
diff --git a/releng/README.md b/releng/README.md
index cfacf4b8e..2aa3b959f 100644
--- a/releng/README.md
+++ b/releng/README.md
@@ -30,7 +30,7 @@ First, we prepare the release. `python -m releng prepare` is used for this.
 Then we tag the release with `python -m releng tag`:
 
 * Git HEAD is detached.
-* `officialRelease = true` is set in `flake.nix`, this is committed, and a
+* `"official_release": true` is set in `version.json`, this is committed, and a
   release is tagged.
 * The tag is merged back into the last branch (either `main` for new releases
   or `release-MAJOR` for maintenance releases) with `git merge -s ours VERSION`
diff --git a/releng/create_release.xsh b/releng/create_release.xsh
index 358124359..62114350b 100644
--- a/releng/create_release.xsh
+++ b/releng/create_release.xsh
@@ -11,7 +11,7 @@ from . import environment
 from .environment import RelengEnvironment
 from . import keys
 from . import docker
-from .version import VERSION, RELEASE_NAME, MAJOR
+from .version import VERSION, RELEASE_NAME, MAJOR, OFFICIAL_RELEASE
 from .gitutils import verify_are_on_tag, git_preconditions
 from . import release_notes
 
@@ -39,12 +39,18 @@ def setup_creds(env: RelengEnvironment):
 
 
 def official_release_commit_tag(force_tag=False):
-    print('[+] Setting officialRelease in flake.nix and tagging')
+    print('[+] Setting officialRelease in version.json and tagging')
     prev_branch = $(git symbolic-ref --short HEAD).strip()
 
     git switch --detach
-    sed -i 's/officialRelease = false/officialRelease = true/' flake.nix
-    git add flake.nix
+
+    # Must be done in two parts due to buffering (opening the file immediately
+    # would truncate it).
+    new_version_json = $(jq --indent 4 '.official_release = true' version.json)
+    with open('version.json', 'w') as fh:
+        fh.write(new_version_json)
+    git add version.json
+
     message = f'release: {VERSION} "{RELEASE_NAME}"\n\nRelease produced with releng/create_release.xsh'
     git commit -m @(message)
     git tag @(['-f'] if force_tag else []) -a -m @(message) @(VERSION)
@@ -250,15 +256,14 @@ def build_manual(eval_result):
 
 
 def upload_manual(env: RelengEnvironment):
-    stable = json.loads($(nix eval --json '.#nix.officialRelease'))
-    if stable:
+    if OFFICIAL_RELEASE:
         version = MAJOR
     else:
         version = 'nightly'
 
     print('[+] aws s3 sync manual')
     aws s3 sync @(MANUAL)/ @(env.docs_bucket)/manual/lix/@(version)/
-    if stable:
+    if OFFICIAL_RELEASE:
         aws s3 sync @(MANUAL)/ @(env.docs_bucket)/manual/lix/stable/
 
 
diff --git a/releng/version.py b/releng/version.py
index 47ef23504..4ad188d46 100644
--- a/releng/version.py
+++ b/releng/version.py
@@ -4,3 +4,4 @@ version_json = json.load(open('version.json'))
 VERSION = version_json['version']
 MAJOR = '.'.join(VERSION.split('.')[:2])
 RELEASE_NAME = version_json['release_name']
+OFFICIAL_RELEASE = version_json['official_release']
diff --git a/version.json b/version.json
index 48db2994f..809358e6d 100644
--- a/version.json
+++ b/version.json
@@ -1,4 +1,5 @@
 {
     "version": "2.91.0-dev",
+    "official_release": false,
     "release_name": "TBA"
 }