Dynamically add scm deps

.github/workflows/build.yml

@@ -18,7 +18,9 @@ jobs:
         os: ['ubuntu-latest']
         python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
       - name: Setup conda
         uses: s-weigand/setup-conda@v1
         with:
@@ -37,5 +39,3 @@ jobs:
       - name: Test
         run: |
           pytest tests
-
-

pyproject.toml

@@ -31,7 +31,7 @@ dependencies = [
     "networkx>=2.7.1",
     "numpy>=1.21.2,<2",
     "scipy>=1.8.0",
-    "plams>2025,<=2025.299",
+    # SCM deps are injected dynamically by scm_metadata_hook.py
 ]
 
 [project.optional-dependencies]
@@ -66,6 +66,9 @@ source = "vcs"
 [tool.hatch.build.hooks.vcs]
 version-file = "src/scm/pyzacros/version.py"
 
+[tool.hatch.metadata.hooks.custom]
+path = "scm_metadata_hook.py"
+
 [tool.scm]
 copy-to-target = ["examples/**/*", "tests/**/*", "../zacros_manual/ZacrosManual.pdf"]
 copy-to-target-path-mappings = {"../zacros_manual/" = "doc/"}

scm_metadata_hook.py

@@ -0,0 +1,25 @@
+"""Metadata hook required for correct automatic versioning of SCM Python deps.
+
+We constrain deps to > the last major version and <= the current tag to allow .dev builds.
+Example: 2025.207.dev4 < 2025.207, so <= 2025.207 includes dev releases.
+"""
+from __future__ import annotations
+
+from hatchling.metadata.plugin.interface import MetadataHookInterface
+from packaging.version import Version
+
+
+class ScmDependenciesMetadataHook(MetadataHookInterface):
+    def update(self, metadata):
+        raw_version = metadata["version"]
+        version = Version(raw_version)
+
+        base_version = version.base_version
+        major_version = version.major
+
+        scm_dependencies = [
+            f"plams>{major_version},<={base_version}",
+        ]
+
+        metadata["dependencies"].extend(scm_dependencies)
+