···8888<section xml:id="sec-pkg-overrideDerivation">
8989 <title><pkg>.overrideDerivation</title>
90909191+ <warning>
9292+ <para>Do not use this function in Nixpkgs. Because it breaks
9393+ package abstraction and doesn’t provide error checking for
9494+ function arguments, it is only intended for ad-hoc customisation
9595+ (such as in <filename>~/.nixpkgs/config.nix</filename>).</para>
9696+ </warning>
9797+9198 <para>
9299 The function <varname>overrideDerivation</varname> is usually available for all the
93100 derivations in the nixpkgs expression (<varname>pkgs</varname>).