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Add builtins.hashFile

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For text files it is possible to do it like so:
`builtins.hashString "sha256" (builtins.readFile /tmp/a)`
but that doesn't work for binary files.

With builtins.hashFile any kind of file can be conveniently hashed.
This commit is contained in:
Daniel Schaefer 2019-05-03 14:30:29 +02:00
parent f9a2ea4486
commit 3f192ac80c
9 changed files with 39 additions and 1 deletions
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5
tests/lang/eval-fail-hashfile-missing.nix Normal file
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@ -0,0 +1,5 @@
let
paths = [ ./this-file-is-definitely-not-there-7392097 "/and/neither/is/this/37293620" ];
in
builtins.concatLists (map (hash: map (builtins.hashFile hash) paths) ["md5" "sha1" "sha256" "sha512"])