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lib.filesystem.pathType: Use new builtins.readFileType if available

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Co-Authored-By: Robert Hensing <robert@roberthensing.nl>
This commit is contained in:
Silvan Mosberger 2023-04-05 18:42:22 +02:00
parent 84a3d633d6
commit fcaa2b1097
1 changed files with 15 additions and 11 deletions
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26
lib/filesystem.nix
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@ -32,17 +32,21 @@ in
pathType /some/file.nix
=> "regular"
*/
pathType = path:
if ! pathExists path
# Fail irrecoverably to mimic the historic behavior of this function and
# the new builtins.readFileType
then abort "lib.filesystem.pathType: Path ${toString path} does not exist."
# The filesystem root is the only path where `dirOf / == /` and
# `baseNameOf /` is not valid. We can detect this and directly return
# "directory", since we know the filesystem root can't be anything else.
else if dirOf path == path
then "directory"
else (readDir (dirOf path)).${baseNameOf path};
pathType =
builtins.readFileType or
# Nix <2.14 compatibility shim
(path:
if ! pathExists path
# Fail irrecoverably to mimic the historic behavior of this function and
# the new builtins.readFileType
then abort "lib.filesystem.pathType: Path ${toString path} does not exist."
# The filesystem root is the only path where `dirOf / == /` and
# `baseNameOf /` is not valid. We can detect this and directly return
# "directory", since we know the filesystem root can't be anything else.
else if dirOf path == path
then "directory"
else (readDir (dirOf path)).${baseNameOf path}
);
/*
Whether a path exists and is a directory.