Windows: enable "spack install" tests (#34696)

* The module-level skip for tests in `cmd.install` on Windows is removed.
  A few classes of errors still persist:

  * Cdash tests are not working on Windows
  * Tests for failed installs are also not working (this will require
    investigating bugs in output redirection)
  * Environments are not yet supported on Windows

  overall though, this enables testing of most basic uses of "spack install"
* Git repositories cached for version lookups were using a layout that
  mimicked the URL as much as possible. This was useful for listing the
  cache directory and understanding what was present at a glance, but
  the paths were overly long on Windows. On all systems, the layout is
  now a single directory based on a hash of the Git URL and is shortened
  (which ensures a consistent and acceptable length, and also avoids
  special characters).
  * In particular, this removes util.url.parse_git_url and its associated
    test, which were used exclusively for generating the git cache layout
* Bootstrapping is now enabled for unit tests on Windows

11 files changed, 145 insertions, 212 deletions

diff --git a/lib/spack/spack/cmd/unit_test.py b/lib/spack/spack/cmd/unit_test.py
index 615f72bd8f..4963ad14c6 100644
--- a/lib/spack/spack/cmd/unit_test.py
+++ b/lib/spack/spack/cmd/unit_test.py
@@ -209,12 +209,11 @@ def unit_test(parser, args, unknown_args):
     # mock configuration used by unit tests
     # Note: skip on windows here because for the moment,
     # clingo is wholly unsupported from bootstrap
-    if sys.platform != "win32":
-        with spack.bootstrap.ensure_bootstrap_configuration():
-            spack.bootstrap.ensure_core_dependencies()
-            if pytest is None:
-                spack.bootstrap.ensure_environment_dependencies()
-                import pytest
+    with spack.bootstrap.ensure_bootstrap_configuration():
+        spack.bootstrap.ensure_core_dependencies()
+        if pytest is None:
+            spack.bootstrap.ensure_environment_dependencies()
+            import pytest
 
     if args.pytest_help:
         # make the pytest.main help output more accurate
diff --git a/lib/spack/spack/directory_layout.py b/lib/spack/spack/directory_layout.py
index 8f07ecdb42..dd4e6dd5e1 100644
--- a/lib/spack/spack/directory_layout.py
+++ b/lib/spack/spack/directory_layout.py
@@ -11,6 +11,7 @@ import re
 import shutil
 import sys
 from contextlib import contextmanager
+from pathlib import Path
 
 import llnl.util.filesystem as fs
 import llnl.util.tty as tty
@@ -104,7 +105,7 @@ class DirectoryLayout:
 
         projection = spack.projections.get_projection(self.projections, spec)
         path = spec.format(projection)
-        return path
+        return str(Path(path))
 
     def write_spec(self, spec, path):
         """Write a spec out to a file."""
diff --git a/lib/spack/spack/test/cmd/install.py b/lib/spack/spack/test/cmd/install.py
index 872d91f0a8..584e7b9eb2 100644
--- a/lib/spack/spack/test/cmd/install.py
+++ b/lib/spack/spack/test/cmd/install.py
@@ -7,6 +7,7 @@ import builtins
 import filecmp
 import itertools
 import os
+import pathlib
 import re
 import sys
 import time
@@ -38,8 +39,6 @@ uninstall = SpackCommand("uninstall")
 buildcache = SpackCommand("buildcache")
 find = SpackCommand("find")
 
-pytestmark = pytest.mark.skipif(sys.platform == "win32", reason="does not run on windows")
-
 
 @pytest.fixture()
 def noop_install(monkeypatch):
@@ -204,7 +203,7 @@ def test_show_log_on_error(
     assert isinstance(install.error, spack.build_environment.ChildError)
     assert install.error.pkg.name == "build-error"
 
-    assert "==> Installing build-error" in out
+    assert "Installing build-error" in out
     assert "See build log for details:" in out
 
 
@@ -263,9 +262,9 @@ def test_install_commit(mock_git_version_info, install_mockery, mock_packages, m
 
     """
     repo_path, filename, commits = mock_git_version_info
-    monkeypatch.setattr(
-        spack.package_base.PackageBase, "git", "file://%s" % repo_path, raising=False
-    )
+    file_url = pathlib.Path(repo_path).as_uri()
+
+    monkeypatch.setattr(spack.package_base.PackageBase, "git", file_url, raising=False)
 
     # Use the earliest commit in the respository
     spec = Spec(f"git-test-commit@{commits[-1]}").concretized()
@@ -548,6 +547,9 @@ def test_cdash_report_concretization_error(
             assert any(x in content for x in expected_messages)
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32", reason="Windows log_output logs phase header out of order"
+)
 @pytest.mark.disable_clean_stage_check
 def test_cdash_upload_build_error(tmpdir, mock_fetch, install_mockery, capfd):
     # capfd interferes with Spack's capturing
@@ -747,6 +749,10 @@ def test_install_deps_then_package(tmpdir, mock_fetch, install_mockery):
     assert os.path.exists(root.prefix)
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32",
+    reason="Environment views not supported on windows. Revisit after #34701",
+)
 @pytest.mark.regression("12002")
 def test_install_only_dependencies_in_env(
     tmpdir, mock_fetch, install_mockery, mutable_mock_env_path
@@ -896,7 +902,7 @@ def test_install_help_does_not_show_cdash_options(capsys):
         assert "CDash URL" not in captured.out
 
 
-def test_install_help_cdash(capsys):
+def test_install_help_cdash():
     """Make sure `spack install --help-cdash` describes CDash arguments"""
     install_cmd = SpackCommand("install")
     out = install_cmd("--help-cdash")
@@ -913,6 +919,9 @@ def test_cdash_auth_token(tmpdir, mock_fetch, install_mockery, capfd):
             assert "Using CDash auth token from environment" in out
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32", reason="Windows log_output logs phase header out of order"
+)
 @pytest.mark.disable_clean_stage_check
 def test_cdash_configure_warning(tmpdir, mock_fetch, install_mockery, capfd):
     # capfd interferes with Spack's capturing of e.g., Build.xml output
@@ -938,6 +947,9 @@ def test_cdash_configure_warning(tmpdir, mock_fetch, install_mockery, capfd):
             assert "foo: No such file or directory" in content
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32", reason="ArchSpec gives test platform debian rather than windows"
+)
 def test_compiler_bootstrap(
     install_mockery_mutable_config,
     mock_packages,
@@ -954,6 +966,7 @@ def test_compiler_bootstrap(
     install("a%gcc@=12.0")
 
 
+@pytest.mark.skipif(sys.platform == "win32", reason="Binary mirrors not supported on windows")
 def test_compiler_bootstrap_from_binary_mirror(
     install_mockery_mutable_config,
     mock_packages,
@@ -994,6 +1007,9 @@ def test_compiler_bootstrap_from_binary_mirror(
     install("--no-cache", "--only", "package", "b%gcc@10.2.0")
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32", reason="ArchSpec gives test platform debian rather than windows"
+)
 @pytest.mark.regression("16221")
 def test_compiler_bootstrap_already_installed(
     install_mockery_mutable_config,
@@ -1037,6 +1053,10 @@ def test_install_fails_no_args_suggests_env_activation(tmpdir):
     assert "using the `spack.yaml` in this directory" in output
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32",
+    reason="Environment views not supported on windows. Revisit after #34701",
+)
 def test_install_env_with_tests_all(
     tmpdir, mock_packages, mock_fetch, install_mockery, mutable_mock_env_path
 ):
@@ -1048,6 +1068,10 @@ def test_install_env_with_tests_all(
         assert os.path.exists(test_dep.prefix)
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32",
+    reason="Environment views not supported on windows. Revisit after #34701",
+)
 def test_install_env_with_tests_root(
     tmpdir, mock_packages, mock_fetch, install_mockery, mutable_mock_env_path
 ):
@@ -1059,6 +1083,10 @@ def test_install_env_with_tests_root(
         assert not os.path.exists(test_dep.prefix)
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32",
+    reason="Environment views not supported on windows. Revisit after #34701",
+)
 def test_install_empty_env(
     tmpdir, mock_packages, mock_fetch, install_mockery, mutable_mock_env_path
 ):
@@ -1072,6 +1100,10 @@ def test_install_empty_env(
     assert "no specs to install" in out
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32",
+    reason="Windows logger I/O operation on closed file when install fails",
+)
 @pytest.mark.disable_clean_stage_check
 @pytest.mark.parametrize(
     "name,method",
@@ -1095,6 +1127,7 @@ def test_installation_fail_tests(install_mockery, mock_fetch, name, method):
     assert "See test log for details" in output
 
 
+@pytest.mark.skipif(sys.platform == "win32", reason="Buildcache not supported on windows")
 def test_install_use_buildcache(
     capsys,
     mock_packages,
@@ -1172,6 +1205,10 @@ def test_install_use_buildcache(
             install_use_buildcache(opt)
 
 
+@pytest.mark.skipif(
+    sys.platform == "win32",
+    reason="Windows logger I/O operation on closed file when install fails",
+)
 @pytest.mark.regression("34006")
 @pytest.mark.disable_clean_stage_check
 def test_padded_install_runtests_root(install_mockery_mutable_config, mock_fetch):
diff --git a/lib/spack/spack/test/directory_layout.py b/lib/spack/spack/test/directory_layout.py
index 4ee1cfeb88..995707db23 100644
--- a/lib/spack/spack/test/directory_layout.py
+++ b/lib/spack/spack/test/directory_layout.py
@@ -8,6 +8,7 @@ This test verifies that the Spack directory layout works properly.
 """
 import os
 import os.path
+from pathlib import Path
 
 import pytest
 
@@ -29,8 +30,12 @@ def test_yaml_directory_layout_parameters(tmpdir, default_mock_concretization):
     # Ensure default layout matches expected spec format
     layout_default = DirectoryLayout(str(tmpdir))
     path_default = layout_default.relative_path_for_spec(spec)
-    assert path_default == spec.format(
-        "{architecture}/" "{compiler.name}-{compiler.version}/" "{name}-{version}-{hash}"
+    assert path_default == str(
+        Path(
+            spec.format(
+                "{architecture}/" "{compiler.name}-{compiler.version}/" "{name}-{version}-{hash}"
+            )
+        )
     )
 
     # Test hash_length parameter works correctly
@@ -43,7 +48,7 @@ def test_yaml_directory_layout_parameters(tmpdir, default_mock_concretization):
     assert len(path_default) - len(path_7) == 25
 
     # Test path_scheme
-    arch, compiler, package7 = path_7.split("/")
+    arch, compiler, package7 = path_7.split(os.sep)
     projections_package7 = {"all": "{name}-{version}-{hash:7}"}
     layout_package7 = DirectoryLayout(str(tmpdir), projections=projections_package7)
     path_package7 = layout_package7.relative_path_for_spec(spec)
@@ -61,10 +66,10 @@ def test_yaml_directory_layout_parameters(tmpdir, default_mock_concretization):
     layout_arch_ns = DirectoryLayout(str(tmpdir), projections=arch_ns_scheme_projections)
 
     arch_path_spec2 = layout_arch_ns.relative_path_for_spec(spec2)
-    assert arch_path_spec2 == spec2.format(arch_scheme)
+    assert arch_path_spec2 == str(Path(spec2.format(arch_scheme)))
 
     ns_path_spec = layout_arch_ns.relative_path_for_spec(spec)
-    assert ns_path_spec == spec.format(ns_scheme)
+    assert ns_path_spec == str(Path(spec.format(ns_scheme)))
 
     # Ensure conflicting parameters caught
     with pytest.raises(InvalidDirectoryLayoutParametersError):
diff --git a/lib/spack/spack/test/util/util_url.py b/lib/spack/spack/test/util/util_url.py
index 451f4a4383..ec8f60627a 100644
--- a/lib/spack/spack/test/util/util_url.py
+++ b/lib/spack/spack/test/util/util_url.py
@@ -8,8 +8,6 @@ import os
 import os.path
 import urllib.parse
 
-import pytest
-
 import spack.util.path
 import spack.util.url as url_util
 
@@ -198,89 +196,6 @@ def test_url_join_absolute_paths():
     assert url_util.join(*args, resolve_href=False) == "http://example.com/path/resource"
 
 
-@pytest.mark.parametrize(
-    "url,parts",
-    [
-        (
-            "ssh://user@host.xz:500/path/to/repo.git/",
-            ("ssh", "user", "host.xz", 500, "/path/to/repo.git"),
-        ),
-        (
-            "ssh://user@host.xz/path/to/repo.git/",
-            ("ssh", "user", "host.xz", None, "/path/to/repo.git"),
-        ),
-        (
-            "ssh://host.xz:500/path/to/repo.git/",
-            ("ssh", None, "host.xz", 500, "/path/to/repo.git"),
-        ),
-        ("ssh://host.xz/path/to/repo.git/", ("ssh", None, "host.xz", None, "/path/to/repo.git")),
-        (
-            "ssh://user@host.xz/path/to/repo.git/",
-            ("ssh", "user", "host.xz", None, "/path/to/repo.git"),
-        ),
-        ("ssh://host.xz/path/to/repo.git/", ("ssh", None, "host.xz", None, "/path/to/repo.git")),
-        (
-            "ssh://user@host.xz/~user/path/to/repo.git/",
-            ("ssh", "user", "host.xz", None, "~user/path/to/repo.git"),
-        ),
-        (
-            "ssh://host.xz/~user/path/to/repo.git/",
-            ("ssh", None, "host.xz", None, "~user/path/to/repo.git"),
-        ),
-        (
-            "ssh://user@host.xz/~/path/to/repo.git",
-            ("ssh", "user", "host.xz", None, "~/path/to/repo.git"),
-        ),
-        ("ssh://host.xz/~/path/to/repo.git", ("ssh", None, "host.xz", None, "~/path/to/repo.git")),
-        ("git@github.com:spack/spack.git", (None, "git", "github.com", None, "spack/spack.git")),
-        ("user@host.xz:/path/to/repo.git/", (None, "user", "host.xz", None, "/path/to/repo.git")),
-        ("host.xz:/path/to/repo.git/", (None, None, "host.xz", None, "/path/to/repo.git")),
-        (
-            "user@host.xz:~user/path/to/repo.git/",
-            (None, "user", "host.xz", None, "~user/path/to/repo.git"),
-        ),
-        (
-            "host.xz:~user/path/to/repo.git/",
-            (None, None, "host.xz", None, "~user/path/to/repo.git"),
-        ),
-        ("user@host.xz:path/to/repo.git", (None, "user", "host.xz", None, "path/to/repo.git")),
-        ("host.xz:path/to/repo.git", (None, None, "host.xz", None, "path/to/repo.git")),
-        (
-            "rsync://host.xz/path/to/repo.git/",
-            ("rsync", None, "host.xz", None, "/path/to/repo.git"),
-        ),
-        ("git://host.xz/path/to/repo.git/", ("git", None, "host.xz", None, "/path/to/repo.git")),
-        (
-            "git://host.xz/~user/path/to/repo.git/",
-            ("git", None, "host.xz", None, "~user/path/to/repo.git"),
-        ),
-        ("http://host.xz/path/to/repo.git/", ("http", None, "host.xz", None, "/path/to/repo.git")),
-        (
-            "https://host.xz/path/to/repo.git/",
-            ("https", None, "host.xz", None, "/path/to/repo.git"),
-        ),
-        ("https://github.com/spack/spack", ("https", None, "github.com", None, "/spack/spack")),
-        ("https://github.com/spack/spack/", ("https", None, "github.com", None, "/spack/spack")),
-        ("file:///path/to/repo.git/", ("file", None, None, None, "/path/to/repo.git")),
-        ("file://~/path/to/repo.git/", ("file", None, None, None, "~/path/to/repo.git")),
-        # bad ports should give us None
-        ("ssh://host.xz:port/path/to/repo.git/", None),
-        # bad ports should give us None
-        ("ssh://host-foo.xz:port/path/to/repo.git/", None),
-        # regular file paths should give us None
-        ("/path/to/repo.git/", None),
-        ("path/to/repo.git/", None),
-        ("~/path/to/repo.git", None),
-    ],
-)
-def test_git_url_parse(url, parts):
-    if parts is None:
-        with pytest.raises(ValueError):
-            url_util.parse_git_url(url)
-    else:
-        assert parts == url_util.parse_git_url(url)
-
-
 def test_default_download_name():
     url = "https://example.com:1234/path/to/file.txt;params?abc=def#file=blob.tar"
     filename = url_util.default_download_filename(url)
diff --git a/lib/spack/spack/test/versions.py b/lib/spack/spack/test/versions.py
index cc06df546f..31b9b47010 100644
--- a/lib/spack/spack/test/versions.py
+++ b/lib/spack/spack/test/versions.py
@@ -8,6 +8,7 @@ We try to maintain compatibility with RPM's version semantics
 where it makes sense.
 """
 import os
+import pathlib
 import sys
 
 import pytest
@@ -598,11 +599,10 @@ def test_invalid_versions(version_str):
         Version(version_str)
 
 
-@pytest.mark.skipif(sys.platform == "win32", reason="Not supported on Windows (yet)")
 def test_versions_from_git(git, mock_git_version_info, monkeypatch, mock_packages):
     repo_path, filename, commits = mock_git_version_info
     monkeypatch.setattr(
-        spack.package_base.PackageBase, "git", "file://%s" % repo_path, raising=False
+        spack.package_base.PackageBase, "git", pathlib.Path(repo_path).as_uri(), raising=False
     )
 
     for commit in commits:
@@ -619,7 +619,6 @@ def test_versions_from_git(git, mock_git_version_info, monkeypatch, mock_package
         assert str(comparator) == expected
 
 
-@pytest.mark.skipif(sys.platform == "win32", reason="Not supported on Windows (yet)")
 @pytest.mark.parametrize(
     "commit_idx,expected_satisfies,expected_not_satisfies",
     [
@@ -643,7 +642,7 @@ def test_git_hash_comparisons(
     """Check that hashes compare properly to versions"""
     repo_path, filename, commits = mock_git_version_info
     monkeypatch.setattr(
-        spack.package_base.PackageBase, "git", "file://%s" % repo_path, raising=False
+        spack.package_base.PackageBase, "git", pathlib.Path(repo_path).as_uri(), raising=False
     )
 
     spec = spack.spec.Spec(f"git-test-commit@{commits[commit_idx]}").concretized()
@@ -654,12 +653,11 @@ def test_git_hash_comparisons(
         assert not spec.satisfies(item)
 
 
-@pytest.mark.skipif(sys.platform == "win32", reason="Not supported on Windows (yet)")
 def test_git_ref_comparisons(mock_git_version_info, install_mockery, mock_packages, monkeypatch):
     """Check that hashes compare properly to versions"""
     repo_path, filename, commits = mock_git_version_info
     monkeypatch.setattr(
-        spack.package_base.PackageBase, "git", "file://%s" % repo_path, raising=False
+        spack.package_base.PackageBase, "git", pathlib.Path(repo_path).as_uri(), raising=False
     )
 
     # Spec based on tag v1.0
@@ -788,7 +786,6 @@ def test_version_intersects_satisfies_semantic(lhs_str, rhs_str, expected):
         ),
     ],
 )
-@pytest.mark.skipif(sys.platform == "win32", reason="Not supported on Windows (yet)")
 def test_git_versions_without_explicit_reference(
     spec_str,
     tested_intersects,
@@ -799,7 +796,7 @@ def test_git_versions_without_explicit_reference(
 ):
     repo_path, filename, commits = mock_git_version_info
     monkeypatch.setattr(
-        spack.package_base.PackageBase, "git", "file://%s" % repo_path, raising=False
+        spack.package_base.PackageBase, "git", pathlib.Path(repo_path).as_uri(), raising=False
     )
     spec = spack.spec.Spec(spec_str)
 
diff --git a/lib/spack/spack/util/url.py b/lib/spack/spack/util/url.py
index 2dbbe6b7b4..9b3c55f332 100644
--- a/lib/spack/spack/util/url.py
+++ b/lib/spack/spack/util/url.py
@@ -10,7 +10,6 @@ Utility functions for parsing, formatting, and manipulating URLs.
 import itertools
 import os
 import posixpath
-import re
 import sys
 import urllib.parse
 import urllib.request
@@ -243,59 +242,6 @@ def _join(base_url, path, *extra, **kwargs):
     )
 
 
-git_re = (
-    r"^(?:([a-z]+)://)?"  # 1. optional scheme
-    r"(?:([^@]+)@)?"  # 2. optional user
-    r"([^:/~]+)?"  # 3. optional hostname
-    r"(?(1)(?::([^:/]+))?|:)"  # 4. :<optional port> if scheme else :
-    r"(.*[^/])/?$"  # 5. path
-)
-
-
-def parse_git_url(url):
-    """Parse git URL into components.
-
-    This parses URLs that look like:
-
-    * ``https://host.com:443/path/to/repo.git``, or
-    * ``git@host.com:path/to/repo.git``
-
-    Anything not matching those patterns is likely a local
-    file or invalid.
-
-    Returned components are as follows (optional values can be ``None``):
-
-    1. ``scheme`` (optional): git, ssh, http, https
-    2. ``user`` (optional): ``git@`` for github, username for http or ssh
-    3. ``hostname``: domain of server
-    4. ``port`` (optional): port on server
-    5. ``path``: path on the server, e.g. spack/spack
-
-    Returns:
-        (tuple): tuple containing URL components as above
-
-    Raises ``ValueError`` for invalid URLs.
-    """
-    match = re.match(git_re, url)
-    if not match:
-        raise ValueError("bad git URL: %s" % url)
-
-    # initial parse
-    scheme, user, hostname, port, path = match.groups()
-
-    # special handling for ~ paths (they're never absolute)
-    if path.startswith("/~"):
-        path = path[1:]
-
-    if port is not None:
-        try:
-            port = int(port)
-        except ValueError:
-            raise ValueError("bad port in git url: %s" % url)
-
-    return (scheme, user, hostname, port, path)
-
-
 def default_download_filename(url: str) -> str:
     """This method computes a default file name for a given URL.
     Note that it makes no request, so this is not the same as the
diff --git a/lib/spack/spack/version/git_ref_lookup.py b/lib/spack/spack/version/git_ref_lookup.py
index 771b4caabf..f48704a012 100644
--- a/lib/spack/spack/version/git_ref_lookup.py
+++ b/lib/spack/spack/version/git_ref_lookup.py
@@ -5,6 +5,7 @@
 
 import os
 import re
+from pathlib import Path
 from typing import Dict, Optional, Tuple
 
 from llnl.util.filesystem import mkdirp, working_dir
@@ -14,8 +15,8 @@ import spack.fetch_strategy
 import spack.paths
 import spack.repo
 import spack.util.executable
+import spack.util.hash
 import spack.util.spack_json as sjson
-import spack.util.url
 import spack.version
 
 from .common import VersionLookupError
@@ -60,9 +61,7 @@ class GitRefLookup(AbstractRefLookup):
     def cache_key(self):
         if not self._cache_key:
             key_base = "git_metadata"
-            if not self.repository_uri.startswith("/"):
-                key_base += "/"
-            self._cache_key = key_base + self.repository_uri
+            self._cache_key = (Path(key_base) / self.repository_uri).as_posix()
 
             # Cache data in misc_cache
             # If this is the first lazy access, initialize the cache as well
@@ -98,14 +97,7 @@ class GitRefLookup(AbstractRefLookup):
     @property
     def repository_uri(self):
         """Identifier for git repos used within the repo and metadata caches."""
-        try:
-            components = [
-                str(c).lstrip("/") for c in spack.util.url.parse_git_url(self.pkg.git) if c
-            ]
-            return os.path.join(*components)
-        except ValueError:
-            # If it's not a git url, it's a local path
-            return os.path.abspath(self.pkg.git)
+        return Path(spack.util.hash.b32_hash(self.pkg.git)[-7:])
 
     def save(self):
         """Save the data to file"""
@@ -136,9 +128,8 @@ class GitRefLookup(AbstractRefLookup):
         known version prior to the commit, as well as the distance from that version
         to the commit in the git repo. Those values are used to compare Version objects.
         """
-        dest = os.path.join(spack.paths.user_repos_cache_path, self.repository_uri)
-        if dest.endswith(".git"):
-            dest = dest[:-4]
+        pathlib_dest = Path(spack.paths.user_repos_cache_path) / self.repository_uri
+        dest = str(pathlib_dest)
 
         # prepare a cache for the repository
         dest_parent = os.path.dirname(dest)
diff --git a/var/spack/repos/builtin.mock/packages/build-error/package.py b/var/spack/repos/builtin.mock/packages/build-error/package.py
index 29342bc5fc..2df3699822 100644
--- a/var/spack/repos/builtin.mock/packages/build-error/package.py
+++ b/var/spack/repos/builtin.mock/packages/build-error/package.py
@@ -3,6 +3,8 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+import sys
+
 from spack.package import *
 
 
@@ -15,18 +17,38 @@ class BuildError(Package):
     version("1.0", md5="0123456789abcdef0123456789abcdef")
 
     def install(self, spec, prefix):
-        with open("configure", "w") as f:
-            f.write(
-                """#!/bin/sh\n
-echo 'checking build system type... x86_64-apple-darwin16.6.0'
-echo 'checking host system type... x86_64-apple-darwin16.6.0'
-echo 'checking for gcc... /Users/gamblin2/src/spack/lib/spack/env/clang/clang'
-echo 'checking whether the C compiler works... yes'
-echo 'checking for C compiler default output file name... a.out'
-echo 'checking for suffix of executables...'
-echo 'configure: error: in /path/to/some/file:'
-echo 'configure: error: cannot run C compiled programs.'
-exit 1
-"""
-            )
-        configure()
+        if sys.platform == "win32":
+            with open("configure.bat", "w") as f:
+                f.write(
+                    """
+    @ECHO off
+    ECHO checking build system type... x86_64-apple-darwin16.6.0
+    ECHO checking host system type... x86_64-apple-darwin16.6.0
+    ECHO checking for gcc... /Users/gamblin2/src/spack/lib/spack/env/clang/clang
+    ECHO checking whether the C compiler works... yes
+    ECHO checking for C compiler default output file name... a.out
+    ECHO checking for suffix of executables...
+    ECHO configure: error: in /path/to/some/file:
+    ECHO configure: error: cannot run C compiled programs.
+    EXIT /B 1
+                  """
+                )
+
+            Executable("configure.bat")("--prefix=%s" % self.prefix)
+            configure()
+        else:
+            with open("configure", "w") as f:
+                f.write(
+                    """#!/bin/sh\n
+    echo 'checking build system type... x86_64-apple-darwin16.6.0'
+    echo 'checking host system type... x86_64-apple-darwin16.6.0'
+    echo 'checking for gcc... /Users/gamblin2/src/spack/lib/spack/env/clang/clang'
+    echo 'checking whether the C compiler works... yes'
+    echo 'checking for C compiler default output file name... a.out'
+    echo 'checking for suffix of executables...'
+    echo 'configure: error: in /path/to/some/file:'
+    echo 'configure: error: cannot run C compiled programs.'
+    exit 1
+    """
+                )
+            configure()
diff --git a/var/spack/repos/builtin.mock/packages/build-warnings/package.py b/var/spack/repos/builtin.mock/packages/build-warnings/package.py
index 06026896e2..ce4af309b9 100644
--- a/var/spack/repos/builtin.mock/packages/build-warnings/package.py
+++ b/var/spack/repos/builtin.mock/packages/build-warnings/package.py
@@ -3,6 +3,8 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+import sys
+
 from spack.package import *
 
 
@@ -15,16 +17,33 @@ class BuildWarnings(Package):
     version("1.0", md5="0123456789abcdef0123456789abcdef")
 
     def install(self, spec, prefix):
-        with open("configure", "w") as f:
-            f.write(
-                """#!/bin/sh\n
-echo 'checking for gcc... /Users/gamblin2/src/spack/lib/spack/env/clang/clang'
-echo 'checking whether the C compiler works... yes'
-echo 'checking for C compiler default output file name... a.out'
-echo 'WARNING: ALL CAPITAL WARNING!'
-echo 'checking for suffix of executables...'
-echo 'foo.c:89: warning: some weird warning!'
-exit 1
-"""
-            )
-        configure()
+        if sys.platform == "win32":
+            with open("configure.bat", "w") as f:
+                f.write(
+                    """
+  @ECHO off
+  ECHO 'checking for gcc... /Users/gamblin2/src/spack/lib/spack/env/clang/clang'
+  ECHO 'checking whether the C compiler works... yes'
+  ECHO 'checking for C compiler default output file name... a.out'
+  ECHO 'WARNING: ALL CAPITAL WARNING!'
+  ECHO 'checking for suffix of executables...'
+  ECHO 'foo.c:89: warning: some weird warning!'
+  EXIT /B 1
+                  """
+                )
+
+            Executable("configure.bat")("--prefix=%s" % self.prefix)
+        else:
+            with open("configure", "w") as f:
+                f.write(
+                    """#!/bin/sh\n
+  echo 'checking for gcc... /Users/gamblin2/src/spack/lib/spack/env/clang/clang'
+  echo 'checking whether the C compiler works... yes'
+  echo 'checking for C compiler default output file name... a.out'
+  echo 'WARNING: ALL CAPITAL WARNING!'
+  echo 'checking for suffix of executables...'
+  echo 'foo.c:89: warning: some weird warning!'
+  exit 1
+  """
+                )
+            configure()
diff --git a/var/spack/repos/builtin.mock/packages/printing-package/package.py b/var/spack/repos/builtin.mock/packages/printing-package/package.py
index 9d41e0a3a6..999b78a095 100644
--- a/var/spack/repos/builtin.mock/packages/printing-package/package.py
+++ b/var/spack/repos/builtin.mock/packages/printing-package/package.py
@@ -3,6 +3,8 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+import os
+
 from spack.package import *
 
 
@@ -20,9 +22,8 @@ class PrintingPackage(Package):
     def install(self, spec, prefix):
         print("BEFORE INSTALL")
 
-        configure("--prefix=%s" % prefix)
-        make()
-        make("install")
+        mkdirp(prefix)
+        touch(os.path.join(prefix, "dummyfile"))
 
         print("AFTER INSTALL")