···

       
274
       
274
       
 
       
      <para>

     

       
275
       
275
       
 
       
        The list of available packages in the various ELPA

     

       
276
       
276
       
 
       
        repositories can be seen with the following commands:

     

       
277
       
277
       
-
       
        <example>

     

       
277
       
277
       
+
       
        <example xml:id="module-services-emacs-querying-packages">

     

       
278
       
278
       
 
       
          <title>Querying Emacs packages</title>

     

       
279
       
279
       
 
       
          <programlisting><![CDATA[

     

       
280
       
280
       
 
       
nix-env -f "<nixpkgs>" -qaP -A emacsPackagesNg.elpaPackages

     
···

       
291
       
291
       
 
       
        (see <xref linkend="sec-declarative-package-mgmt" />). Simply

     

       
292
       
292
       
 
       
        modify your file <filename>configuration.nix</filename> to

     

       
293
       
293
       
 
       
        make it contain:

     

       
294
       
294
       
-
       
        <example>

     

       
294
       
294
       
+
       
        <example xml:id="module-services-emacs-configuration-nix">

     

       
295
       
295
       
 
       
          <title>Custom Emacs in <filename>configuration.nix</filename></title>

     

       
296
       
296
       
 
       
          <programlisting><![CDATA[

     

       
297
       
297
       
 
       
{

     
···

       
319
       
319
       
 
       
        Emacs only for yourself, you can do so by adding it to your

     

       
320
       
320
       
 
       
        <filename>~/.config/nixpkgs/config.nix</filename>

     

       
321
       
321
       
 
       
        (see <link xlink:href="http://nixos.org/nixpkgs/manual/#sec-modify-via-packageOverrides">Nixpkgs manual</link>):

     

       
322
       
322
       
-
       
        <example>

     

       
322
       
322
       
+
       
        <example xml:id="module-services-emacs-config-nix">

     

       
323
       
323
       
 
       
          <title>Custom Emacs in <filename>~/.config/nixpkgs/config.nix</filename></title>

     

       
324
       
324
       
 
       
          <programlisting><![CDATA[

     

       
325
       
325
       
 
       
{

     
···

       
522
       
522
       
 
       
    The Emacs init file should be changed to load the extension

     

       
523
       
523
       
 
       
    packages at startup:

     

       
524
       
524
       
 
       


     

       
525
       
525
       
-
       
    <example>

     

       
525
       
525
       
+
       
    <example xml:id="module-services-emacs-package-initialisation">

     

       
526
       
526
       
 
       
      <title>Package initialization in <filename>.emacs</filename></title>

     

       
527
       
527
       
 
       
      <programlisting><![CDATA[

     

       
528
       
528
       
 
       
(require 'package)