Remove DIYStage (#44949)

4 files changed, 9 insertions, 141 deletions

diff --git a/lib/spack/spack/package_base.py b/lib/spack/spack/package_base.py
index d82f4cd499..fff859efd0 100644
--- a/lib/spack/spack/package_base.py
+++ b/lib/spack/spack/package_base.py
@@ -1583,13 +1583,11 @@ class PackageBase(WindowsRPath, PackageViewMixin, RedistributionMixin, metaclass
                 tty.debug("Patching failed last time. Restaging.")
                 self.stage.restage()
             else:
-                # develop specs/ DIYStages may have patch failures but
-                # should never be restaged
-                msg = (
-                    "A patch failure was detected in %s." % self.name
-                    + " Build errors may occur due to this."
+                # develop specs may have patch failures but should never be restaged
+                tty.warn(
+                    f"A patch failure was detected in {self.name}."
+                    " Build errors may occur due to this."
                 )
-                tty.warn(msg)
                 return
 
         # If this file exists, then we already applied all the patches.
diff --git a/lib/spack/spack/stage.py b/lib/spack/spack/stage.py
index 67a81a68ee..9e2328700f 100644
--- a/lib/spack/spack/stage.py
+++ b/lib/spack/spack/stage.py
@@ -346,7 +346,7 @@ class Stage(LockableStagingDir):
     similar, and are intended to persist for only one run of spack.
     """
 
-    #: Most staging is managed by Spack. DIYStage is one exception.
+    #: Most staging is managed by Spack. DevelopStage is one exception.
     needs_fetching = True
     requires_patch_success = True
 
@@ -822,62 +822,6 @@ class StageComposite(pattern.Composite):
             item.keep = value
 
 
-class DIYStage:
-    """
-    Simple class that allows any directory to be a spack stage.  Consequently,
-    it does not expect or require that the source path adhere to the standard
-    directory naming convention.
-    """
-
-    needs_fetching = False
-    requires_patch_success = False
-
-    def __init__(self, path):
-        if path is None:
-            raise ValueError("Cannot construct DIYStage without a path.")
-        elif not os.path.isdir(path):
-            raise StagePathError("The stage path directory does not exist:", path)
-
-        self.archive_file = None
-        self.path = path
-        self.source_path = path
-        self.created = True
-
-    # DIY stages do nothing as context managers.
-    def __enter__(self):
-        pass
-
-    def __exit__(self, exc_type, exc_val, exc_tb):
-        pass
-
-    def fetch(self, *args, **kwargs):
-        tty.debug("No need to fetch for DIY.")
-
-    def check(self):
-        tty.debug("No checksum needed for DIY.")
-
-    def expand_archive(self):
-        tty.debug("Using source directory: {0}".format(self.source_path))
-
-    @property
-    def expanded(self):
-        """Returns True since the source_path must exist."""
-        return True
-
-    def restage(self):
-        raise RestageError("Cannot restage a DIY stage.")
-
-    def create(self):
-        self.created = True
-
-    def destroy(self):
-        # No need to destroy DIY stage.
-        pass
-
-    def cache_local(self):
-        tty.debug("Sources for DIY stages are not cached")
-
-
 class DevelopStage(LockableStagingDir):
     needs_fetching = False
     requires_patch_success = False
diff --git a/lib/spack/spack/test/concretize_requirements.py b/lib/spack/spack/test/concretize_requirements.py
index 960ef90a3a..3b3b564691 100644
--- a/lib/spack/spack/test/concretize_requirements.py
+++ b/lib/spack/spack/test/concretize_requirements.py
@@ -103,23 +103,6 @@ def test_repo(_create_test_repo, monkeypatch, mock_stage):
         yield mock_repo_path
 
 
-class MakeStage:
-    def __init__(self, stage):
-        self.stage = stage
-
-    def __call__(self, *args, **kwargs):
-        return self.stage
-
-
-@pytest.fixture
-def fake_installs(monkeypatch, tmpdir):
-    stage_path = str(tmpdir.ensure("fake-stage", dir=True))
-    universal_unused_stage = spack.stage.DIYStage(stage_path)
-    monkeypatch.setattr(
-        spack.build_systems.generic.Package, "_make_stage", MakeStage(universal_unused_stage)
-    )
-
-
 def test_one_package_multiple_reqs(concretize_scope, test_repo):
     conf_str = """\
 packages:
@@ -514,7 +497,7 @@ packages:
     assert s2.satisfies("@2.5")
 
 
-def test_reuse_oneof(concretize_scope, _create_test_repo, mutable_database, fake_installs):
+def test_reuse_oneof(concretize_scope, _create_test_repo, mutable_database, mock_fetch):
     conf_str = """\
 packages:
   y:
diff --git a/lib/spack/spack/test/stage.py b/lib/spack/spack/test/stage.py
index b576a42f68..7bb7f3753a 100644
--- a/lib/spack/spack/test/stage.py
+++ b/lib/spack/spack/test/stage.py
@@ -23,7 +23,7 @@ import spack.stage
 import spack.util.executable
 import spack.util.url as url_util
 from spack.resource import Resource
-from spack.stage import DevelopStage, DIYStage, ResourceStage, Stage, StageComposite
+from spack.stage import DevelopStage, ResourceStage, Stage, StageComposite
 from spack.util.path import canonicalize_path
 
 # The following values are used for common fetch and stage mocking fixtures:
@@ -146,9 +146,8 @@ def check_destroy(stage, stage_name):
     assert not os.path.exists(stage_path)
 
     # tmp stage needs to remove tmp dir too.
-    if not isinstance(stage, DIYStage):
-        target = os.path.realpath(stage_path)
-        assert not os.path.exists(target)
+    target = os.path.realpath(stage_path)
+    assert not os.path.exists(target)
 
 
 def check_setup(stage, stage_name, archive):
@@ -801,62 +800,6 @@ class TestStage:
         with Stage("file:///does-not-exist", path=testpath) as stage:
             assert stage.path == testpath
 
-    def test_diystage_path_none(self):
-        """Ensure DIYStage for path=None behaves as expected."""
-        with pytest.raises(ValueError):
-            DIYStage(None)
-
-    def test_diystage_path_invalid(self):
-        """Ensure DIYStage for an invalid path behaves as expected."""
-        with pytest.raises(spack.stage.StagePathError):
-            DIYStage("/path/does/not/exist")
-
-    def test_diystage_path_valid(self, tmpdir):
-        """Ensure DIYStage for a valid path behaves as expected."""
-        path = str(tmpdir)
-        stage = DIYStage(path)
-        assert stage.path == path
-        assert stage.source_path == path
-
-        # Order doesn't really matter for DIYStage since they are
-        # basically NOOPs; however, call each since they are part
-        # of the normal stage usage and to ensure full test coverage.
-        stage.create()  # Only sets the flag value
-        assert stage.created
-
-        stage.cache_local()  # Only outputs a message
-        stage.fetch()  # Only outputs a message
-        stage.check()  # Only outputs a message
-        stage.expand_archive()  # Only outputs a message
-
-        assert stage.expanded  # The path/source_path does exist
-
-        with pytest.raises(spack.stage.RestageError):
-            stage.restage()
-
-        stage.destroy()  # A no-op
-        assert stage.path == path  # Ensure can still access attributes
-        assert os.path.exists(stage.source_path)  # Ensure path still exists
-
-    def test_diystage_preserve_file(self, tmpdir):
-        """Ensure DIYStage preserves an existing file."""
-        # Write a file to the temporary directory
-        fn = tmpdir.join(_readme_fn)
-        fn.write(_readme_contents)
-
-        # Instantiate the DIYStage and ensure the above file is unchanged.
-        path = str(tmpdir)
-        stage = DIYStage(path)
-        assert os.path.isdir(path)
-        assert os.path.isfile(str(fn))
-
-        stage.create()  # Only sets the flag value
-
-        readmefn = str(fn)
-        assert os.path.isfile(readmefn)
-        with open(readmefn) as _file:
-            _file.read() == _readme_contents
-
 
 def _create_files_from_tree(base, tree):
     for name, content in tree.items():