feat: Windows filtering and sets

Co-authored-by: Matthieu Darbois <mayeut@users.noreply.github.com>

cibuildwheel/__main__.py

@@ -6,7 +6,7 @@ import traceback
 from configparser import ConfigParser
 from pathlib import Path
 
-from typing import Any, Dict, List, Optional, overload
+from typing import Any, Dict, List, Optional, Set, overload
 
 import cibuildwheel
 import cibuildwheel.linux
@@ -304,13 +304,13 @@ def print_preamble(platform: str, build_options: BuildOptions) -> None:
 
 
 def print_build_identifiers(
-    platform: str, build_selector: BuildSelector, architectures: List[Architecture]
+    platform: str, build_selector: BuildSelector, architectures: Set[Architecture]
 ) -> None:
     python_configurations: List[Any] = []
     if platform == 'linux':
         python_configurations = cibuildwheel.linux.get_python_configurations(build_selector, architectures)
     elif platform == 'windows':
-        python_configurations = cibuildwheel.windows.get_python_configurations(build_selector)
+        python_configurations = cibuildwheel.windows.get_python_configurations(build_selector, architectures)
     elif platform == 'macos':
         python_configurations = cibuildwheel.macos.get_python_configurations(build_selector)
 

cibuildwheel/linux.py

@@ -2,7 +2,7 @@ import subprocess
 import sys
 import textwrap
 from pathlib import Path, PurePath
-from typing import List, NamedTuple
+from typing import List, NamedTuple, Set
 
 from .docker_container import DockerContainer
 from .logger import log
@@ -24,7 +24,7 @@ class PythonConfiguration(NamedTuple):
 
 
 def get_python_configurations(
-    build_selector: BuildSelector, architectures: List[Architecture]
+    build_selector: BuildSelector, architectures: Set[Architecture]
 ) -> List[PythonConfiguration]:
     python_configurations = [
         PythonConfiguration(version='2.7', identifier='cp27-manylinux_x86_64', path_str='/opt/python/cp27-cp27m'),
@@ -61,7 +61,7 @@ def get_python_configurations(
         PythonConfiguration(version='3.9', identifier='cp39-manylinux_s390x', path_str='/opt/python/cp39-cp39'),
     ]
 
-    # return all configurations whose arch is in our `architectures` list,
+    # return all configurations whose arch is in our `architectures` set,
     # and match the build/skip rules
     return [
         c for c in python_configurations

cibuildwheel/macos.py

@@ -187,7 +187,7 @@ def setup_python(python_configuration: PythonConfiguration,
 
 
 def build(options: BuildOptions) -> None:
-    if options.architectures != [Architecture.x86_64]:
+    if not options.architectures <= {Architecture.x86_64}:
         raise ValueError(textwrap.dedent(f'''
             Invalid archs option {options.architectures}. macOS only supports x86_64 for the moment.
             If you want to set emulation architectures on Linux, use CIBW_ARCHS_LINUX instead.

cibuildwheel/util.py

@@ -2,13 +2,14 @@ import os
 import platform as platform_module
 import re
 import ssl
+import functools
 import textwrap
 import urllib.request
 from enum import Enum
 from fnmatch import fnmatch
 from pathlib import Path
 from time import sleep
-from typing import Dict, List, NamedTuple, Optional
+from typing import Dict, List, NamedTuple, Optional, Set
 
 import certifi
 
@@ -124,7 +125,10 @@ class DependencyConstraints:
         return f'{self.__class__.__name__}{self.base_file_path!r})'
 
 
+@functools.total_ordering
 class Architecture(Enum):
+    value: str
+
     # mac/linux archs
     x86_64 = 'x86_64'
     i686 = 'i686'
@@ -136,25 +140,29 @@ class Architecture(Enum):
     x86 = 'x86'
     AMD64 = 'AMD64'
 
+    # Allow this to be sorted
+    def __lt__(self, other: "Architecture") -> bool:
+        return self.value < other.value
+
     @staticmethod
-    def parse_config(config: str, platform: str) -> 'List[Architecture]':
+    def parse_config(config: str, platform: str) -> 'Set[Architecture]':
-        result = []
+        result = set()
         for arch_str in re.split(r'[\s,]+', config):
             if arch_str == 'auto':
-                result += Architecture.auto_archs(platform=platform)
+                result |= Architecture.auto_archs(platform=platform)
             else:
-                result.append(Architecture(arch_str))
+                result.add(Architecture(arch_str))
         return result
 
     @staticmethod
-    def auto_archs(platform: str) -> 'List[Architecture]':
+    def auto_archs(platform: str) -> 'Set[Architecture]':
         native_architecture = Architecture(platform_module.machine())
-        result = [native_architecture]
+        result = {native_architecture}
         if platform == 'linux' and native_architecture == Architecture.x86_64:
             # x86_64 machines can run i686 docker containers
-            result.append(Architecture.i686)
+            result.add(Architecture.i686)
         if platform == 'windows' and native_architecture == Architecture.AMD64:
-            result.append(Architecture.x86)
+            result.add(Architecture.x86)
         return result
 
 
@@ -162,7 +170,7 @@ class BuildOptions(NamedTuple):
     package_dir: Path
     output_dir: Path
     build_selector: BuildSelector
-    architectures: List[Architecture]
+    architectures: Set[Architecture]
     environment: ParsedEnvironment
     before_all: str
     before_build: Optional[str]

cibuildwheel/windows.py

@@ -5,7 +5,7 @@ import sys
 import tempfile
 import textwrap
 from pathlib import Path
-from typing import Dict, List, NamedTuple, Optional, Sequence
+from typing import Dict, List, NamedTuple, Optional, Sequence, Set
 from zipfile import ZipFile
 
 import toml
@@ -48,7 +48,12 @@ class PythonConfiguration(NamedTuple):
     url: Optional[str]
 
 
-def get_python_configurations(build_selector: BuildSelector) -> List[PythonConfiguration]:
+def get_python_configurations(build_selector: BuildSelector, architectures: Set[Architecture]) -> List[PythonConfiguration]:
+    map_arch = {
+        '32': Architecture.x86,
+        '64': Architecture.AMD64,
+    }
+
     python_configurations = [
         # CPython
         PythonConfiguration(version='2.7.18', arch='32', identifier='cp27-win32', url=None),
@@ -75,7 +80,10 @@ def get_python_configurations(build_selector: BuildSelector) -> List[PythonConfi
         python_configurations = [c for c in python_configurations if not c.version.startswith('2.7')]
 
     # skip builds as required
-    python_configurations = [c for c in python_configurations if build_selector(c.identifier)]
+    python_configurations = [
+        c for c in python_configurations
+        if build_selector(c.identifier) and map_arch[c.arch] in architectures
+    ]
 
     return python_configurations
 
@@ -202,11 +210,12 @@ def pep_518_cp35_workaround(package_dir: Path, env: Dict[str, str]) -> None:
 
 
 def build(options: BuildOptions) -> None:
-    if options.architectures != [Architecture.AMD64, Architecture.x86]:
+    allowed_architectures = {Architecture.AMD64, Architecture.x86}
+    if not options.architectures <= allowed_architectures:
         raise ValueError(textwrap.dedent(f'''
-            Invalid archs option {options.architectures}. Windows only supports 'amd64,x86' for the
+            Invalid archs option {options.architectures}. Windows only supports
-            moment. If you want to set emulation architectures on Linux, use CIBW_ARCHS_LINUX
+            {sorted(allowed_architectures)}. If you want to set emulation
-            instead.
+            architectures on Linux, use CIBW_ARCHS_LINUX instead.
         '''))
 
     temp_dir = Path(tempfile.mkdtemp(prefix='cibuildwheel'))
@@ -220,7 +229,7 @@ def build(options: BuildOptions) -> None:
             before_all_prepared = prepare_command(options.before_all, project='.', package=options.package_dir)
             shell(before_all_prepared, env=env)
 
-        python_configurations = get_python_configurations(options.build_selector)
+        python_configurations = get_python_configurations(options.build_selector, options.architectures)
 
         for config in python_configurations:
             log.build_start(config.identifier)

unit_test/main_tests/main_platform_test.py

@@ -75,9 +75,9 @@ def test_archs_default(platform, intercepted_build_args, monkeypatch):
     build_options = intercepted_build_args.args[0]
 
     if platform == 'linux':
-        assert build_options.architectures == [Architecture.x86_64, Architecture.i686]
+        assert build_options.architectures == {Architecture.x86_64, Architecture.i686}
     else:
-        assert build_options.architectures == [Architecture.x86_64]
+        assert build_options.architectures == {Architecture.x86_64}
 
 
 @pytest.mark.parametrize('use_env_var', [False, True])
@@ -92,7 +92,7 @@ def test_archs_argument(platform, intercepted_build_args, monkeypatch, use_env_v
     main()
     build_options = intercepted_build_args.args[0]
 
-    assert build_options.architectures == [Architecture.ppc64le]
+    assert build_options.architectures == {Architecture.ppc64le}
 
 
 def test_archs_platform_specific(platform, intercepted_build_args, monkeypatch):
@@ -106,8 +106,8 @@ def test_archs_platform_specific(platform, intercepted_build_args, monkeypatch):
     build_options = intercepted_build_args.args[0]
 
     if platform == 'linux':
-        assert build_options.architectures == [Architecture.ppc64le]
+        assert build_options.architectures == {Architecture.ppc64le}
     elif platform == 'windows':
-        assert build_options.architectures == [Architecture.x86]
+        assert build_options.architectures == {Architecture.x86}
     elif platform == 'macos':
-        assert build_options.architectures == [Architecture.x86_64]
+        assert build_options.architectures == {Architecture.x86_64}