Merge branch 'master' into henryiii/pep517

cibuildwheel/__main__.py

@@ -128,6 +128,7 @@ def main() -> None:
 
     build_config, skip_config = os.environ.get('CIBW_BUILD', '*'), os.environ.get('CIBW_SKIP', '')
     environment_config = get_option_from_environment('CIBW_ENVIRONMENT', platform=platform, default='')
+    before_all = get_option_from_environment('CIBW_BEFORE_ALL', platform=platform, default='')
     before_build = get_option_from_environment('CIBW_BEFORE_BUILD', platform=platform)
     repair_command = get_option_from_environment('CIBW_REPAIR_WHEEL_COMMAND', platform=platform, default=repair_command_default)
     dependency_versions = get_option_from_environment('CIBW_DEPENDENCY_VERSIONS', platform=platform, default='pinned')
@@ -212,6 +213,7 @@ def main() -> None:
         test_extras=test_extras,
         before_test=before_test,
         before_build=before_build,
+        before_all=before_all,
         build_verbosity=build_verbosity,
         build_selector=build_selector,
         repair_command=repair_command,

cibuildwheel/environment.py

@@ -1,6 +1,6 @@
 import bashlex  # type: ignore
 
-from typing import Dict, List
+from typing import Dict, List, Mapping
 
 from . import bashlex_eval
 
@@ -61,8 +61,8 @@ class ParsedEnvironment:
     def __init__(self, assignments: List[EnvironmentAssignment]):
         self.assignments = assignments
 
-    def as_dictionary(self, prev_environment: Dict[str, str]) -> Dict[str, str]:
-        environment = prev_environment.copy()
+    def as_dictionary(self, prev_environment: Mapping[str, str]) -> Dict[str, str]:
+        environment = dict(**prev_environment)
 
         for assignment in self.assignments:
             value = assignment.evaluated_value(environment=environment)

cibuildwheel/linux.py

@@ -133,6 +133,30 @@ def build(options: BuildOptions) -> None:
 
             call(['docker', 'start', container_name])
 
+            if options.before_all:
+                call(
+                    ['docker', 'exec', '-i', container_name] + shell_cmd,
+                    universal_newlines=True,
+                    input='''
+                        PS4='    + '
+
+                        set -o errexit
+                        set -o xtrace
+
+                        # add a modern Python interpreter to PATH so it can be used by BEFORE_ALL
+                        # commands
+                        export PATH=/opt/python/cp38-cp38:$PATH
+
+                        {environment_exports}
+
+                        sh -c {before_all}
+
+                    '''.format(
+                        environment_exports='\n'.join(options.environment.as_shell_commands()),
+                        before_all=shlex.quote(prepare_command(options.before_all, project='/project', package=container_package_dir))
+                    )
+                )
+
             for config in platform_configs:
                 if options.dependency_constraints:
                     constraints_file = options.dependency_constraints.get_for_python_version(config.version)

cibuildwheel/macos.py

@@ -176,6 +176,11 @@ def build(options: BuildOptions) -> None:
     built_wheel_dir = temp_dir / 'built_wheel'
     repaired_wheel_dir = temp_dir / 'repaired_wheel'
 
+    if options.before_all:
+        env = options.environment.as_dictionary(prev_environment=os.environ)
+        before_all_prepared = prepare_command(options.before_all, project='.', package=options.package_dir)
+        call([before_all_prepared], shell=True, env=env)
+
     python_configurations = get_python_configurations(options.build_selector)
 
     for config in python_configurations:

cibuildwheel/util.py

@@ -112,6 +112,7 @@ class BuildOptions(NamedTuple):
     output_dir: Path
     build_selector: BuildSelector
     environment: ParsedEnvironment
+    before_all: str
     before_build: Optional[str]
     repair_command: str
     manylinux_images: Optional[Dict[str, str]]

cibuildwheel/windows.py

@@ -188,6 +188,11 @@ def build(options: BuildOptions) -> None:
     nuget = Path('C:\\cibw\\nuget.exe')
     download('https://dist.nuget.org/win-x86-commandline/latest/nuget.exe', nuget)
 
+    if options.before_all:
+        env = options.environment.as_dictionary(prev_environment=os.environ)
+        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)
     for config in python_configurations:
         dependency_constraint_flags = []