Merge branch 'release/v3.7.0'

Author: szaghi

.github/workflows/python-package.yml

@@ -46,7 +46,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12']
 
     steps:
     - uses: actions/checkout@v4.2.2

README.md

@@ -7,7 +7,7 @@
 [![Build Status](https://github.com/szaghi/FoBiS/actions/workflows/python-package.yml/badge.svg)](https://github.com/szaghi/FoBiS/actions)
 [![codecov](https://codecov.io/gh/szaghi/FoBiS/graph/badge.svg)](https://codecov.io/gh/szaghi/FoBiS)
 [![GitHub issues](https://img.shields.io/github/issues/szaghi/FoBiS.svg)]()
-[![Supported Python versions](https://img.shields.io/badge/Py-%203.9,%203.10,%203.11,%203.12-blue.svg)]()
+[![Supported Python versions](https://img.shields.io/badge/Py-%203.10,%203.11,%203.12-blue.svg)]()
 
 [![License](https://img.shields.io/badge/license-GNU%20GeneraL%20Public%20License%20v3,%20GPLv3-blue.svg)]()
 

docs/guide/changelog.md

@@ -4,6 +4,11 @@ All notable changes to FoBiS.py are documented here.
 Versions follow [Semantic Versioning](https://semver.org/).
 Format follows [Keep a Changelog](https://keepachangelog.com/).
 
+## [3.7.0] — 2026-03-16
+### Changed
+- Drop Python 3.9, modernize type hints to PEP 604/585 syntax ⚠ BREAKING CHANGE
+
+
 ## [3.6.13] — 2026-03-16
 ### Fixed
 - **cli**: Resolve ruff lint failures in fobis/cli sub-package

docs/guide/contributing.md

@@ -119,7 +119,7 @@ build ─┘  (3 OS × 4 Python versions)
 |-----|---------|----------------|
 | `lint` | ubuntu, Python 3.12 | `ruff check` + `ruff format --check` |
 | `test` | ubuntu, Python 3.12 + gfortran | full `pytest` suite |
-| `build` | ubuntu / macOS / Windows × Python 3.9–3.12 | `pip install -e .` + entry-point smoke test |
+| `build` | ubuntu / macOS / Windows × Python 3.10–3.12 | `pip install -e .` + entry-point smoke test |
 | `publish` | ubuntu, Python 3.12 | builds wheel/sdist, pushes to PyPI via OIDC |
 
 `publish` only runs when the commit is a `v*` tag **and** all three other jobs pass.

docs/guide/installation.md

@@ -2,7 +2,7 @@
 
 ## Requirements
 
-- **Python** 3.9 or later
+- **Python** 3.10 or later
 - **A Fortran compiler** in `PATH` (e.g. `gfortran`, `ifort`, `ifx`)
 - [**Typer**](https://typer.tiangolo.com/) — installed automatically as a dependency (provides the CLI and shell completion)
 - Optional: [PreForM.py](https://github.com/szaghi/PreForM) for source preprocessing

fobis/Builder.py

@@ -30,7 +30,7 @@
 import operator
 import os
 from collections.abc import Callable
-from typing import Any, Optional
+from typing import Any
 
 from .Compiler import Compiler
 from .utils import check_results, print_fake, safe_mkdir, syswork, syswork_steps
@@ -42,8 +42,8 @@ class Builder:
     def __init__(
         self,
         cliargs: Any,
-        print_n: Optional[Callable[..., None]] = None,
-        print_w: Optional[Callable[..., None]] = None,
+        print_n: Callable[..., None] | None = None,
+        print_w: Callable[..., None] | None = None,
     ) -> None:
         """
         Parameters
@@ -644,10 +644,10 @@ def gnu_make(self) -> str:
     def build(
         self,
         file_to_build: Any,
-        output: Optional[str] = None,
-        nomodlibs: Optional[list[str]] = None,
-        submodules: Optional[list[str]] = None,
-        mklib: Optional[str] = None,
+        output: str | None = None,
+        nomodlibs: list[str] | None = None,
+        submodules: list[str] | None = None,
+        mklib: str | None = None,
         verbose: bool = False,
         log: bool = False,
         quiet: bool = False,
@@ -746,7 +746,7 @@ def build(
                     )
         return build_ok
 
-    def get_output_name(self, file_to_build: Any, output: Optional[str] = None, mklib: Optional[str] = None) -> str:
+    def get_output_name(self, file_to_build: Any, output: str | None = None, mklib: str | None = None) -> str:
         """
         Return the output build file name.
 

fobis/Fetcher.py

@@ -25,7 +25,7 @@
 import os
 import shutil
 from collections.abc import Callable
-from typing import Any, Optional
+from typing import Any
 
 from .utils import print_fake, syswork
 
@@ -40,8 +40,8 @@ class Fetcher:
     def __init__(
         self,
         deps_dir: str,
-        print_n: Optional[Callable[..., None]] = None,
-        print_w: Optional[Callable[..., None]] = None,
+        print_n: Callable[..., None] | None = None,
+        print_w: Callable[..., None] | None = None,
     ) -> None:
         """
         Parameters
@@ -85,9 +85,9 @@ def fetch(
         self,
         name: str,
         url: str,
-        branch: Optional[str] = None,
-        tag: Optional[str] = None,
-        rev: Optional[str] = None,
+        branch: str | None = None,
+        tag: str | None = None,
+        rev: str | None = None,
         update: bool = False,
     ) -> str:
         """
@@ -141,7 +141,7 @@ def fetch(
                 self.print_w("Error merging updates for " + name + ":\n" + result[1])
         return dep_dir
 
-    def build_dep(self, name: str, dep_dir: str, mode: Optional[str] = None) -> None:
+    def build_dep(self, name: str, dep_dir: str, mode: str | None = None) -> None:
         """
         Build a dependency using FoBiS.py build.
 
@@ -226,10 +226,10 @@ def _resolve_url(self, repo: str) -> str:
     def install_from_github(
         self,
         repo: str,
-        branch: Optional[str] = None,
-        tag: Optional[str] = None,
-        rev: Optional[str] = None,
-        mode: Optional[str] = None,
+        branch: str | None = None,
+        tag: str | None = None,
+        rev: str | None = None,
+        mode: str | None = None,
         update: bool = False,
         no_build: bool = False,
         prefix: str = "./",
@@ -276,7 +276,7 @@ def install_from_github(
         self._build_dep_tracked(name, dep_dir, mode=mode)
         self._install_artifacts(dep_dir, prefix, bin_dir, lib_dir, include_dir)
 
-    def _build_dep_tracked(self, name: str, dep_dir: str, mode: Optional[str] = None) -> None:
+    def _build_dep_tracked(self, name: str, dep_dir: str, mode: str | None = None) -> None:
         """
         Build a dependency using 'fobis build --track_build'.
 

fobis/FoBiSConfig.py

@@ -24,7 +24,7 @@
 import os
 import re
 import sys
-from typing import Any, Optional
+from typing import Any
 
 from typer.testing import CliRunner as _CliRunner
 
@@ -49,7 +49,7 @@ class FoBiSConfig:
     FoBiS configuration class handling.
     """
 
-    def __init__(self, fake_args: Optional[list[str]] = None) -> None:
+    def __init__(self, fake_args: list[str] | None = None) -> None:
         """
         Attributes
         ----------

fobis/Fobos.py

@@ -31,7 +31,7 @@
 import sys
 from collections.abc import Callable
 from copy import deepcopy
-from typing import Any, Optional
+from typing import Any
 
 from .utils import check_results, print_fake, syswork
 
@@ -44,8 +44,8 @@ class Fobos:
     def __init__(
         self,
         cliargs: Any,
-        print_n: Optional[Callable[..., None]] = None,
-        print_w: Optional[Callable[..., None]] = None,
+        print_n: Callable[..., None] | None = None,
+        print_w: Callable[..., None] | None = None,
     ) -> None:
         """
         Parameters
@@ -277,7 +277,7 @@ def _set_cliargs(self, cliargs):
             self._check_cliargs_cflags(cliargs=cliargs, cliargs_dict=cliargs_dict)
         return
 
-    def get(self, option: str, mode: Optional[str] = None, toprint: bool = True) -> Optional[str]:
+    def get(self, option: str, mode: str | None = None, toprint: bool = True) -> str | None:
         """
         Get options defined into the fobos file.
 
@@ -302,7 +302,7 @@ def get(self, option: str, mode: Optional[str] = None, toprint: bool = True) ->
         else:
             return value
 
-    def get_output_name(self, mode: Optional[str] = None, toprint: bool = True) -> Optional[str]:
+    def get_output_name(self, mode: str | None = None, toprint: bool = True) -> str | None:
         """
         Method for building the output name accordingly to the fobos options.
 

fobis/ParsedFile.py

@@ -20,7 +20,7 @@
 # along with FoBiS.py. If not, see <http://www.gnu.org/licenses/>.
 
 import sys
-from typing import Any, Optional, Union
+from typing import Any
 
 try:
     import functools
@@ -283,7 +283,7 @@ def __init__(
         include: bool = False,
         nomodlib: bool = False,
         to_compile: bool = False,
-        output: Optional[str] = None,
+        output: str | None = None,
         is_doctest: bool = False,
     ) -> None:
         """
@@ -374,7 +374,7 @@ def parse(
         inc: list[str] = [".INC", ".F", ".FOR", ".FPP", ".F77", ".F90", ".F95", ".F03", ".F08"],
         preprocessor: str = "cpp",
         preproc: str = "",
-        include: Union[str, list[str]] = "",
+        include: str | list[str] = "",
     ) -> None:
         """
         Parse the file creating its the dependencies list and the list of modules names that self eventually contains.