Replace hardcoded version with release tag-based versioning

.github/workflows/release.yml

@@ -4,6 +4,10 @@ on:
   push:
     tags: ["v*"]
   workflow_dispatch:
+    inputs:
+      version:
+        description: "Version to build (e.g. 1.2.3, without the v prefix)"
+        required: true
 
 jobs:
   build:
@@ -14,6 +18,17 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v4
+      - name: Set version from tag
+        shell: bash
+        run: |
+          VERSION="${{ github.event.inputs.version || github.ref_name }}"
+          VERSION="${VERSION#v}"
+          if ! [[ "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "Invalid version: '$VERSION'. Provide a semver version via the workflow_dispatch input or push a v* tag."
+            exit 1
+          fi
+          sed -i.bak "s/^version = \".*\"/version = \"$VERSION\"/" Cargo.toml
+          rm -f Cargo.toml.bak
       - uses: dtolnay/rust-toolchain@1.85.0
       - uses: PyO3/maturin-action@v1
         with:
@@ -28,6 +43,17 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Set version from tag
+        shell: bash
+        run: |
+          VERSION="${{ github.event.inputs.version || github.ref_name }}"
+          VERSION="${VERSION#v}"
+          if ! [[ "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "Invalid version: '$VERSION'. Provide a semver version via the workflow_dispatch input or push a v* tag."
+            exit 1
+          fi
+          sed -i.bak "s/^version = \".*\"/version = \"$VERSION\"/" Cargo.toml
+          rm -f Cargo.toml.bak
       - uses: PyO3/maturin-action@v1
         with:
           command: sdist

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "maturin"
 
 [project]
 name = "rustypca"
-version = "0.1.0"
+dynamic = ["version"]
 description = "Probabilistic PCA with missing value support using Rust and PyO3"
 readme = {file = "README.md", content-type = "text/markdown"}
 license = {file = "LICENSE"}

rustypca/__init__.py

@@ -1,6 +1,12 @@
 """Probabilistic Principal Component Analysis with missing value support."""
 
+from importlib.metadata import PackageNotFoundError, version
+
 from ._rustypca import PPCA
 
 __all__ = ["PPCA"]
-__version__ = "0.1.0"
+
+try:
+    __version__ = version("rustypca")
+except PackageNotFoundError:
+    __version__ = "unknown"