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Diffstat (limited to 'doc/manual/expressions')
| -rw-r--r-- | doc/manual/expressions/builtins.xml | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/doc/manual/expressions/builtins.xml b/doc/manual/expressions/builtins.xml index 63d13e184a12..e9c641ab305a 100644 --- a/doc/manual/expressions/builtins.xml +++ b/doc/manual/expressions/builtins.xml @@ -292,6 +292,24 @@ 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 |