directory_layout now raises an error when an install fails.
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@ -109,12 +109,17 @@ def path_for_spec(self, spec):
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def remove_path_for_spec(self, spec):
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def remove_path_for_spec(self, spec):
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"""Removes a prefix and any empty parent directories from the root."""
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"""Removes a prefix and any empty parent directories from the root.
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Raised RemoveFailedError if something goes wrong.
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"""
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path = self.path_for_spec(spec)
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path = self.path_for_spec(spec)
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assert(path.startswith(self.root))
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assert(path.startswith(self.root))
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if os.path.exists(path):
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if os.path.exists(path):
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shutil.rmtree(path, True)
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try:
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shutil.rmtree(path)
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except exceptions.OSError, e:
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raise RemoveFailedError(spec, path, e)
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path = os.path.dirname(path)
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path = os.path.dirname(path)
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while path != self.root:
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while path != self.root:
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@ -330,6 +335,15 @@ def __init__(self, installed_spec, new_spec):
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% installed_spec, new_spec)
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% installed_spec, new_spec)
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class RemoveFailedError(DirectoryLayoutError):
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"""Raised when a DirectoryLayout cannot remove an install prefix."""
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def __init__(self, installed_spec, prefix, error):
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super(RemoveFailedError, self).__init__(
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'Could not remove prefix %s for %s : %s'
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% prefix, installed_spec.short_spec, error)
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self.cause = error
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class InconsistentInstallDirectoryError(DirectoryLayoutError):
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class InconsistentInstallDirectoryError(DirectoryLayoutError):
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"""Raised when a package seems to be installed to the wrong place."""
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"""Raised when a package seems to be installed to the wrong place."""
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def __init__(self, message):
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def __init__(self, message):
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@ -370,3 +384,5 @@ def __init__(self, spec, extension_spec):
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super(NoSuchExtensionError, self).__init__(
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super(NoSuchExtensionError, self).__init__(
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"%s cannot be removed from %s because it's not installed."% (
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"%s cannot be removed from %s because it's not installed."% (
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extension_spec.short_spec, spec.short_spec))
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extension_spec.short_spec, spec.short_spec))
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