Luke Granger-Brown
57725ef3ec
git-subtree-dir: third_party/nixpkgs git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
26 lines
901 B
Nix
26 lines
901 B
Nix
# This overlay implements mocking of the lib.path.splitRoot function
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# It pretends that the last component named "mock-root" is the root:
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#
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# splitRoot /foo/mock-root/bar/mock-root/baz
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# => {
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# root = /foo/mock-root/bar/mock-root;
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# subpath = "./baz";
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# }
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self: super: {
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path = super.path // {
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splitRoot = path:
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let
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parts = super.path.splitRoot path;
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components = self.path.subpath.components parts.subpath;
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count = self.length components;
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rootIndex = count - self.lists.findFirstIndex
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(component: component == "mock-root")
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(self.length components)
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(self.reverseList components);
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root = self.path.append parts.root (self.path.subpath.join (self.take rootIndex components));
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subpath = self.path.subpath.join (self.drop rootIndex components);
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in {
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inherit root subpath;
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};
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};
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}
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