···

       
133
       
133
       
 
       
      <varname>stdenv.mkDerivation</varname>, are defined using this

     

       
134
       
134
       
 
       
      function, which means most packages in the nixpkgs expression,

     

       
135
       
135
       
 
       
      <varname>pkgs</varname>, have this function.

     

       
136
       
136
       
-
       
    </para> 

     

       
136
       
136
       
+
       
    </para>

     

       
137
       
137
       
 
       


     

       
138
       
138
       
 
       
    <para>

     

       
139
       
139
       
 
       
      Example usage:

     
···

       
228
       
228
       
 
       
    ] name)</code> from the <literal>INI</literal> generator. It gets the name

     

       
229
       
229
       
 
       
    of a section and returns a sanitized name. The default

     

       
230
       
230
       
 
       
    <literal>mkSectionName</literal> escapes <literal>[</literal> and

     

       
231
       
231
       
-
       
    <literal>]</literal> with a backslash. 

     

       
231
       
231
       
+
       
    <literal>]</literal> with a backslash.

     

       
232
       
232
       
 
       
  </para>

     

       
233
       
233
       
 
       


     

       
234
       
234
       
 
       
  <note><para>Nix store paths can be converted to strings by enclosing a

     
···

       
523
       
523
       
 
       
  It is possible to inspect the arguments with which an image was built

     

       
524
       
524
       
 
       
  using its <varname>buildArgs</varname> attribute.

     

       
525
       
525
       
 
       
  </para>

     

       
526
       
526
       
-
       
	

     

       
527
       
527
       
-
       
	

     

       
526
       
526
       
+
       


     

       
527
       
527
       
+
       


     

       
528
       
528
       
+
       


     

       
529
       
529
       
+
       
  <note>

     

       
528
       
530
       
 
       
  <para>

     

       
529
       
531
       
 
       
  If you see errors similar to <literal>getProtocolByName: does not exist (no such protocol name: tcp)</literal>

     

       
530
       
532
       
 
       
  you may need to add <literal>pkgs.iana_etc</literal> to <varname>contents</varname>.

     

       
531
       
533
       
 
       
  </para>

     

       
532
       
532
       
-
       
	

     

       
534
       
534
       
+
       
  </note>

     

       
535
       
535
       
+
       


     

       
536
       
536
       
+
       
  <note>

     

       
533
       
537
       
 
       
  <para>

     

       
534
       
538
       
 
       
  If you see errors similar to <literal>Error_Protocol ("certificate has unknown CA",True,UnknownCa)</literal>

     

       
535
       
539
       
 
       
  you may need to add <literal>pkgs.cacert</literal> to <varname>contents</varname>.

     

       
536
       
540
       
 
       
  </para>

     

       
541
       
541
       
+
       
  </note>

     

       
537
       
542
       
 
       


     

       
538
       
543
       
 
       
</section>

     

       
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544