66fa718ceb
In order to make readTree import symlinked directories I've been looking into how to detect if a symlink points to a directory (since this would allow us to use symlinks for //nix/sparseTree). I've found a hack for this: symlinkPointsToDir = path: isSymlink path && builtins.pathExists (toString path + "/.") Unfortunately it doesn't seem to be possible to distinguish whether the symlink target does not exist or is a regular file. Since it's possible, I thought might as well add this to `pathType`. To make returning the extra information workable, I've elected to use the attribute set layout used by `//nix/tag`. This doesn't require us to depend anything (as opposed to yants), but gives us pattern matching (via `nix.tag.match`) and also quite idiomatic checking of pathTypes: pathType ./foo ? file (pathType ./foo).symlink or null == "symlink-directory" Nonexistent paths are encoded like this: pathType ./foo ? missing Of course we can't use this in readTree (since it must be zero dependency), but we can easily inline this hack at some point. Change-Id: I15b64a1ea69953c95dc3239ef5860623652b3089 Reviewed-on: https://cl.tvl.fyi/c/depot/+/3535 Tested-by: BuildkiteCI Reviewed-by: Profpatsch <mail@profpatsch.de> Reviewed-by: tazjin <mail@tazj.in> |
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.. | ||
directory | ||
.skip-subtree | ||
default.nix | ||
missing | ||
symlink-directory | ||
symlink-file | ||
symlink-symlink-directory | ||
symlink-symlink-file |