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feat(nix/utils): handle toString-able sets produced by builtins.path

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When preparing cl/4381 I noticed that we actually handle this case
properly. depot.nix.utils.storePathName depot.path now works as
expected.

Change-Id: Ice9329c67b2e2210852012f5abe82fbbb13193de
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4382
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Autosubmit: sterni <sternenseemann@systemli.org>
This commit is contained in:
sterni 2021-12-16 17:28:21 +01:00 committed by clbot
parent e25ef08c45
commit 887ac4d3d4
2 changed files with 8 additions and 3 deletions
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7
nix/utils/default.nix
View file

@ -21,17 +21,18 @@ let
then p.name
else if builtins.isPath p
then builtins.baseNameOf p
else if builtins.isString p
else if builtins.isString p || (builtins.isAttrs p && (p ? outPath || p ? __toString))
then
let
strPath = toString p;
# strip leading storeDir and trailing slashes
noStoreDir = lib.removeSuffix "/"
(lib.removePrefix "${builtins.storeDir}/" p);
(lib.removePrefix "${builtins.storeDir}/" strPath);
# a basename of a child of a store path isn't really
# referring to a store path, so removing the string
# context is safe (e. g. "hello" for "${hello}/bin/hello").
basename = builtins.unsafeDiscardStringContext
(builtins.baseNameOf p);
(builtins.baseNameOf strPath);
in
# If p is a direct child of storeDir, we need to remove
# the leading hash as well to make sure that:

4
nix/utils/tests/default.nix
View file

@ -85,6 +85,8 @@ let
cheddarStorePath =
builtins.unsafeDiscardStringContext depot.tools.cheddar.outPath;
cleanedSource = lib.cleanSource ./.;
storePathNameTests = it "correctly gets the basename of a store path" [
(assertEq "base name of a derivation"
(storePathName depot.tools.cheddar) depot.tools.cheddar.name)
@ -94,6 +96,8 @@ let
(storePathName "${cheddarStorePath}/bin/cheddar") "cheddar")
(assertEq "base name of a path"
(storePathName ../default.nix) "default.nix")
(assertEq "base name of a cleanSourced path"
(storePathName cleanedSource) cleanedSource.name)
];
in