···88<section xml:id="sec-pkg-overrideDerivation">
89 <title><pkg>.overrideDerivation</title>
90000000091 <para>
92 The function <varname>overrideDerivation</varname> is usually available for all the
93 derivations in the nixpkgs expression (<varname>pkgs</varname>).
···88<section xml:id="sec-pkg-overrideDerivation">
89 <title><pkg>.overrideDerivation</title>
9091+ <warning>
92+ <para>Do not use this function in Nixpkgs. Because it breaks
93+ package abstraction and doesn’t provide error checking for
94+ function arguments, it is only intended for ad-hoc customisation
95+ (such as in <filename>~/.nixpkgs/config.nix</filename>).</para>
96+ </warning>
97+98 <para>
99 The function <varname>overrideDerivation</varname> is usually available for all the
100 derivations in the nixpkgs expression (<varname>pkgs</varname>).