diff options
Diffstat (limited to 'doc/functions.xml')
| -rw-r--r-- | doc/functions.xml | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/functions.xml b/doc/functions.xml index f5fb90921bfa..3850e58c0168 100644 --- a/doc/functions.xml +++ b/doc/functions.xml @@ -52,6 +52,20 @@ in ...</programlisting> It's equivalent to <varname>pkgs</varname> in the above example. </para> + <para> + Note that in previous versions of nixpkgs, this method replaced any changes from <link + linkend="sec-modify-via-packageOverrides">config.packageOverrides</link>, + along with that from previous calls if this function was called repeatedly. + Now those previous changes will be preserved so this function can be "chained" meaningfully. + To recover the old behavior, make sure <varname>config.packageOverrides</varname> is unset, + and call this only once off a "freshly" imported nixpkgs: + + <programlisting>let + pkgs = import <nixpkgs> { config: {}; }; + newpkgs = pkgs.overridePackages ...; +in ...</programlisting> + </para> + </section> <section xml:id="sec-pkg-override"> |