wroclaw-git-backups/nix
1
0
Fork 0
mirror of https://github.com/NixOS/nix synced 2025-07-07 01:51:47 +02:00
Code Activity

Add builtins.hashFile

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

13
doc/manual/expressions/builtins.xml
View file

@ -705,6 +705,19 @@ builtins.genList (x: x * x) 5
</varlistentry>
<varlistentry xml:id='builtin-hashFile'>
<term><function>builtins.hashFile</function>
<replaceable>type</replaceable> <replaceable>p</replaceable></term>
<listitem><para>Return a base-16 representation of the
cryptographic hash of the file at path <replaceable>p</replaceable>. The
hash algorithm specified by <replaceable>type</replaceable> must
be one of <literal>"md5"</literal>, <literal>"sha1"</literal>,
<literal>"sha256"</literal> or <literal>"sha512"</literal>.</para></listitem>
</varlistentry>
<varlistentry xml:id='builtin-head'>
<term><function>builtins.head</function>
<replaceable>list</replaceable></term>