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authorEelco Dolstra <eelco.dolstra@logicblox.com>2017-05-24T09·07+0200
committerGitHub <noreply@github.com>2017-05-24T09·07+0200
commitb303ad012cc4fa9d4fc947191e685eaef45fb6ed (patch)
tree162562ffe9f218585ceedc20b2d8e323a5ff8c20 /doc
parentedbb105e98b1d2c54776e91b49984eb50cce9db4 (diff)
parent2b2de5ef6aeb023f22e551e74e454acc73106cc8 (diff)
Merge pull request #1382 from FRidh/patch-1
Document fetchTarball can take a sha256
Diffstat (limited to 'doc')
-rw-r--r--doc/manual/expressions/builtins.xml18
1 files changed, 18 insertions, 0 deletions
diff --git a/doc/manual/expressions/builtins.xml b/doc/manual/expressions/builtins.xml
index 8a32661066fe..f46a93ae0d5d 100644
--- a/doc/manual/expressions/builtins.xml
+++ b/doc/manual/expressions/builtins.xml
@@ -298,6 +298,24 @@ with import (fetchTarball https://github.com/NixOS/nixpkgs-channels/archive/nixo
 stdenv.mkDerivation { … }
 </programlisting>
 
+    Note that when obtaining the hash with <varname>nix-prefetch-url
+    </varname> the option <varname>--unpack</varname> is required.
+    </para> 
+      
+    <para>This function can also verify the contents against a hash. 
+    In that case, the function takes a set instead of a URL. The set 
+    requires the attribute <varname>url</varname> and the attribute
+    <varname>sha256</varname>, e.g.
+      
+<programlisting>
+with import (fetchTarball {
+  url = https://github.com/NixOS/nixpkgs-channels/archive/nixos-14.12.tar.gz;
+  sha256 = "1jppksrfvbk5ypiqdz4cddxdl8z6zyzdb2srq8fcffr327ld5jj2";
+}) {};
+
+stdenv.mkDerivation { … }
+</programlisting>
+      
     </para>
 
     <para>This function is not available if <link