Fixups to make appveyor happy

.coveragerc

@@ -14,6 +14,8 @@ omit =
 exclude_lines =
     # Have to re-enable the standard pragma
     \#\s*pragma: no cover
+    # We optionally substitute this
+    ${COVERAGE_IGNORE_WINDOWS}
 
     # Don't complain if tests don't hit defensive assertion code:
     ^\s*raise AssertionError\b

appveyor.yml

@@ -1,4 +1,7 @@
 environment:
+    global:
+        COVERAGE_IGNORE_WINDOWS: '# pragma: windows no cover'
+        TOX_TESTENV_PASSENV: COVERAGE_IGNORE_WINDOWS
     matrix:
         - TOXENV: py27
         - TOXENV: py35

pre_commit/languages/docker.py

@@ -16,30 +16,30 @@ ENVIRONMENT_DIR = 'docker'
 PRE_COMMIT_LABEL = 'PRE_COMMIT'
 
 
-def md5(s):
+def md5(s):  # pragma: windows no cover
     return hashlib.md5(five.to_bytes(s)).hexdigest()
 
 
-def docker_tag(repo_cmd_runner):
+def docker_tag(repo_cmd_runner):  # pragma: windows no cover
     return 'pre-commit-{}'.format(
         md5(os.path.basename(repo_cmd_runner.path()))
     ).lower()
 
 
-def docker_is_running():
+def docker_is_running():  # pragma: windows no cover
     try:
         return cmd_output('docker', 'ps')[0] == 0
     except CalledProcessError:
         return False
 
 
-def assert_docker_available():
+def assert_docker_available():  # pragma: windows no cover
     assert docker_is_running(), (
         'Docker is either not running or not configured in this environment'
     )
 
 
-def build_docker_image(repo_cmd_runner, **kwargs):
+def build_docker_image(repo_cmd_runner, **kwargs):  # pragma: windows no cover
     pull = kwargs.pop('pull')
     assert not kwargs, kwargs
     cmd = (
@@ -56,7 +56,7 @@ def install_environment(
         repo_cmd_runner,
         version='default',
         additional_dependencies=(),
-):
+):  # pragma: windows no cover
     assert repo_cmd_runner.exists('Dockerfile'), (
         'No Dockerfile was found in the hook repository'
     )
@@ -65,9 +65,9 @@ def install_environment(
     )
     assert_docker_available()
 
-    directory = repo_cmd_runner.path(helpers.environment_dir(
+    directory = repo_cmd_runner.path(
-        ENVIRONMENT_DIR, 'default',
+        helpers.environment_dir(ENVIRONMENT_DIR, 'default'),
-    ))
+    )
 
     # Docker doesn't really have relevant disk environment, but pre-commit
     # still needs to cleanup it's state files on failure
@@ -76,7 +76,7 @@ def install_environment(
         os.mkdir(directory)
 
 
-def run_hook(repo_cmd_runner, hook, file_args):
+def run_hook(repo_cmd_runner, hook, file_args):  # pragma: windows no cover
     assert_docker_available()
     # Rebuild the docker image in case it has gone missing, as many people do
     # automated cleanup of docker images.

pre_commit/languages/node.py

@@ -14,7 +14,7 @@ from pre_commit.xargs import xargs
 ENVIRONMENT_DIR = 'node_env'
 
 
-def get_env_patch(venv):
+def get_env_patch(venv):  # pragma: windows no cover
     return (
         ('NODE_VIRTUAL_ENV', venv),
         ('NPM_CONFIG_PREFIX', venv),
@@ -25,9 +25,8 @@ def get_env_patch(venv):
 
 
 @contextlib.contextmanager
-def in_env(repo_cmd_runner, language_version):
+def in_env(repo_cmd_runner, language_version):  # pragma: windows no cover
-    envdir = os.path.join(
+    envdir = repo_cmd_runner.path(
-        repo_cmd_runner.prefix_dir,
         helpers.environment_dir(ENVIRONMENT_DIR, language_version),
     )
     with envcontext(get_env_patch(envdir)):
@@ -38,7 +37,7 @@ def install_environment(
         repo_cmd_runner,
         version='default',
         additional_dependencies=(),
-):
+):  # pragma: windows no cover
     additional_dependencies = tuple(additional_dependencies)
     assert repo_cmd_runner.exists('package.json')
     directory = helpers.environment_dir(ENVIRONMENT_DIR, version)
@@ -62,6 +61,6 @@ def install_environment(
             )
 
 
-def run_hook(repo_cmd_runner, hook, file_args):
+def run_hook(repo_cmd_runner, hook, file_args):  # pragma: windows no cover
     with in_env(repo_cmd_runner, hook['language_version']):
         return xargs(helpers.to_cmd(hook), file_args)

pre_commit/languages/python.py

@@ -32,8 +32,7 @@ def get_env_patch(venv):
 
 @contextlib.contextmanager
 def in_env(repo_cmd_runner, language_version):
-    envdir = os.path.join(
+    envdir = repo_cmd_runner.path(
-        repo_cmd_runner.prefix_dir,
         helpers.environment_dir(ENVIRONMENT_DIR, language_version),
     )
     with envcontext(get_env_patch(envdir)):

pre_commit/languages/ruby.py

@@ -18,7 +18,7 @@ from pre_commit.xargs import xargs
 ENVIRONMENT_DIR = 'rbenv'
 
 
-def get_env_patch(venv, language_version):
+def get_env_patch(venv, language_version):  # pragma: windows no cover
     patches = (
         ('GEM_HOME', os.path.join(venv, 'gems')),
         ('RBENV_ROOT', venv),
@@ -34,16 +34,17 @@ def get_env_patch(venv, language_version):
 
 
 @contextlib.contextmanager
-def in_env(repo_cmd_runner, language_version):
+def in_env(repo_cmd_runner, language_version):  # pragma: windows no cover
-    envdir = os.path.join(
+    envdir = repo_cmd_runner.path(
-        repo_cmd_runner.prefix_dir,
         helpers.environment_dir(ENVIRONMENT_DIR, language_version),
     )
     with envcontext(get_env_patch(envdir, language_version)):
         yield
 
 
-def _install_rbenv(repo_cmd_runner, version='default'):
+def _install_rbenv(
+        repo_cmd_runner, version='default',
+):  # pragma: windows no cover
     directory = helpers.environment_dir(ENVIRONMENT_DIR, version)
 
     with tarfile.open(resource_filename('rbenv.tar.gz')) as tf:
@@ -86,7 +87,7 @@ def _install_rbenv(repo_cmd_runner, version='default'):
             activate_file.write('export RBENV_VERSION="{}"\n'.format(version))
 
 
-def _install_ruby(runner, version):
+def _install_ruby(runner, version):  # pragma: windows no cover
     try:
         helpers.run_setup_cmd(runner, ('rbenv', 'download', version))
     except CalledProcessError:  # pragma: no cover (usually find with download)
@@ -98,7 +99,7 @@ def install_environment(
         repo_cmd_runner,
         version='default',
         additional_dependencies=(),
-):
+):  # pragma: windows no cover
     additional_dependencies = tuple(additional_dependencies)
     directory = helpers.environment_dir(ENVIRONMENT_DIR, version)
     with clean_path_on_failure(repo_cmd_runner.path(directory)):
@@ -126,6 +127,6 @@ def install_environment(
             )
 
 
-def run_hook(repo_cmd_runner, hook, file_args):
+def run_hook(repo_cmd_runner, hook, file_args):  # pragma: windows no cover
     with in_env(repo_cmd_runner, hook['language_version']):
         return xargs(helpers.to_cmd(hook), file_args)

pre_commit/languages/swift.py

@@ -14,20 +14,14 @@ BUILD_DIR = '.build'
 BUILD_CONFIG = 'release'
 
 
-def get_env_patch(venv):
+def get_env_patch(venv):  # pragma: windows no cover
     bin_path = os.path.join(venv, BUILD_DIR, BUILD_CONFIG)
-    patches = (
+    return (('PATH', (bin_path, os.pathsep, Var('PATH'))),)
-        ('PATH', (
-            bin_path, os.pathsep, Var('PATH'),
-        )),
-    )
-    return patches
 
 
 @contextlib.contextmanager
-def in_env(repo_cmd_runner):
+def in_env(repo_cmd_runner):  # pragma: windows no cover
-    envdir = os.path.join(
+    envdir = repo_cmd_runner.path(
-        repo_cmd_runner.prefix_dir,
         helpers.environment_dir(ENVIRONMENT_DIR, 'default'),
     )
     with envcontext(get_env_patch(envdir)):
@@ -38,13 +32,13 @@ def install_environment(
         repo_cmd_runner,
         version='default',
         additional_dependencies=(),
-):
+):  # pragma: windows no cover
     assert version == 'default', (
         'Pre-commit does not support language_version for docker '
     )
-    directory = repo_cmd_runner.path(helpers.environment_dir(
+    directory = repo_cmd_runner.path(
-        ENVIRONMENT_DIR, 'default',
+        helpers.environment_dir(ENVIRONMENT_DIR, 'default'),
-    ))
+    )
 
     # Build the swift package
     with clean_path_on_failure(directory):
@@ -57,6 +51,6 @@ def install_environment(
         ))
 
 
-def run_hook(repo_cmd_runner, hook, file_args):
+def run_hook(repo_cmd_runner, hook, file_args):  # pragma: windows no cover
     with in_env(repo_cmd_runner):
         return xargs(helpers.to_cmd(hook), file_args)

testing/util.py

@@ -1,12 +1,12 @@
 from __future__ import unicode_literals
 
-import distutils
 import os.path
 import shutil
 
 import jsonschema
 import pytest
 
+from pre_commit import parse_shebang
 from pre_commit.languages.docker import docker_is_running
 from pre_commit.util import cmd_output
 from pre_commit.util import cwd
@@ -70,7 +70,7 @@ skipif_slowtests_false = pytest.mark.skipif(
 )
 
 skipif_cant_run_swift = pytest.mark.skipif(
-    distutils.spawn.find_executable('swift') is None,
+    parse_shebang.find_executable('swift') is None,
     reason='swift isn\'t installed or can\'t be found'
 )