fix: correct prerelease release-please version

Co-authored-by: Miles Cranmer <miles.cranmer@gmail.com>

Author: MilesCranmerBot

.github/workflows/update_backend.yml

@@ -40,7 +40,7 @@ jobs:
         run: |
           if git diff --quiet pysr/juliapkg.json; then
             echo "No changes to pysr/juliapkg.json. Restoring changes."
-            git restore pyproject.toml .release-please-manifest.json
+            git restore pyproject.toml
           fi
 
       - name: "Create PR if necessary"
@@ -56,7 +56,6 @@ jobs:
           delete-branch: true
           commit-message: "chore: update backend to v${{ steps.get-latest.outputs.version }}"
           add-paths: |
-            .release-please-manifest.json
             pyproject.toml
             pysr/juliapkg.json
 

.github/workflows/update_backend_version.py

@@ -12,17 +12,12 @@
 repo_root = Path(__file__).parent / ".." / ".."
 pyproject_toml = repo_root / "pyproject.toml"
 juliapkg_json = repo_root / "pysr" / "juliapkg.json"
-release_please_manifest = repo_root / ".release-please-manifest.json"
-
 with open(pyproject_toml) as toml_file:
     pyproject_data = tomlkit.parse(toml_file.read())
 
 with open(juliapkg_json) as f:
     juliapkg_data = json.load(f)
 
-with open(release_please_manifest) as f:
-    release_please_manifest_data = json.load(f)
-
 current_version = pyproject_data["project"]["version"]
 parts = current_version.split(".")
 
@@ -57,7 +52,6 @@
 new_version = f"{major}.{minor}.{new_patch}{new_suffix}{extra_parts}"
 
 pyproject_data["project"]["version"] = new_version
-release_please_manifest_data["."] = new_version
 
 # Update backend - maintain current format (either "rev" or "version")
 backend_pkg = juliapkg_data["packages"]["SymbolicRegression"]
@@ -77,6 +71,3 @@
     json.dump(juliapkg_data, f, indent=4)
     f.write("\n")
 
-with open(release_please_manifest, "w") as f:
-    json.dump(release_please_manifest_data, f, indent=2)
-    f.write("\n")

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "2.1.0"
+  ".": "2.0.0a2"
 }

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## [2.1.0](https://github.com/MilesCranmer/PySR/compare/v2.0.0...v2.1.0) (2026-04-18)
+## [2.0.0a2](https://github.com/MilesCranmer/PySR/compare/v2.0.0a1...v2.0.0a2) (2026-04-18)
 
 
 ### Features

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "pysr"
-version = "2.1.0"
+version = "2.0.0a2"
 authors = [
     {name = "Miles Cranmer", email = "miles.cranmer@gmail.com"},
 ]