Hi all, The Nixpkgs Manual mentions that stdenv provides a shell function, stripHash, that will strip off the directory and hash part of a store path, and print out just the name. (See http://nixos.org/nixpkgs/manual/#fun-stripHash).
However, it doesn't actually print anything out. (At least not in my environment--nixpkgs from the unstable channel, recently updated). Digging further: [nix-shell:/tmp/build]$ type stripHash stripHash is a function stripHash () { strippedName=$(basename $1); if echo "$strippedName" | grep -q '^[a-z0-9]\{32\}-'; then strippedName=$(echo "$strippedName" | cut -c34-); fi } It seems that it's correctly stripping off the name, but not echoing it as the manual suggests. And sure enough, poking around in builder scripts in nixpkgs, there are lots of uses of stripHash that follow this pattern: $(stripHash $foo; echo $strippedName) Is this a bug that everybody just works around, or is it the desired behaviour? Colin
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