Scanners: Difference between revisions

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===Epson===

If your scanner is listed as supported by the <tt>epkowa</tt> backend:

If your scanner is listed as supported by the <tt>epkowa</tt> backend and is connected by USB or SCSI:

<syntaxhighlight lang="nix">hardware.sane.extraBackends = [ pkgs.epkowa ];</syntaxhighlight>

If your scanner is listed as supported by the <tt>epkowa</tt> backend and is on the network,

substitute the host name or IP address in:

hardware.sane.extraBackends = [

(pkgs.epkowa.overrideAttrs (oldAttrs: {

postInstall = oldAttrs.postInstall + ''

echo "net epson10a2e0.local" >> $out/etc/sane.d/epkowa.conf

'';

}))

];

</syntaxhighlight>

Some other scanners (see [https://gitlab.com/utsushi/utsushi/blob/master/README list]) need the <tt>utsushi</tt> backend:

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<ol>

<li>~~You need to install a special version of~~ xsane~~, which you can enable~~ by ~~amending~~ <tt>/etc/nixos/configuration.nix</tt> ~~as follows~~:

<li>Enable GIMP support in xsane by editing <tt>/etc/nixos/configuration.nix.</tt> Remove <tt>pkgs.xsane</tt> from your package list, and use the following instead:

<syntaxhighlight lang="nix">{

...

#...

~~nixpkgs~~.~~config.packageOverrides~~ = ~~pkgs: {~~

environment.systemPackages = [

~~xsaneGimp =~~ pkgs.xsane.override { gimpSupport = true; };

(pkgs.xsane.override { gimpSupport = true; })

};

];

...

#...

}</syntaxhighlight></li>

<li>Rebuild: <syntaxhighlight lang="console">$ sudo nixos-rebuild switch</syntaxhighlight></li>

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==Network scanning==

If ~~NixOs~~ cannot find a scanner located on your network, you may be interested in adding in your <tt>configuration.nix</tt>:

If NixOS cannot find a scanner located on your network, you may be interested in adding in your <tt>configuration.nix</tt>:

<syntaxhighlight lang="nix">{

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==Using the scanner button==

Many scanners feature a hardware button which makes for very convenient operation, especially in combination with an automated document processing system like <tt>paperless</tt>. NixOS includes the scanner button daemon <tt>scanbd</tt> which can be used for this purpose; however, its setup isn't terribly user friendly.

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};

}</syntaxhighlight>

==See also==

@@ Line 72: / Line 72: @@
 ===Epson===
-If your scanner is listed as supported by the <tt>epkowa</tt> backend:
+If your scanner is listed as supported by the <tt>epkowa</tt> backend and is connected by USB or SCSI:
 <syntaxhighlight lang="nix">hardware.sane.extraBackends = [ pkgs.epkowa ];</syntaxhighlight>
+If your scanner is listed as supported by the <tt>epkowa</tt> backend and is on the network,
+substitute the host name or IP address in:
+<syntaxhighlight lang="nix">
+hardware.sane.extraBackends = [
+  (pkgs.epkowa.overrideAttrs (oldAttrs: {
+    postInstall = oldAttrs.postInstall + ''
+      echo "net epson10a2e0.local" >> $out/etc/sane.d/epkowa.conf
+    '';
+  }))
+];
+</syntaxhighlight>
 Some other scanners (see [https://gitlab.com/utsushi/utsushi/blob/master/README list]) need the <tt>utsushi</tt> backend:
@@ Line 132: / Line 145: @@
 <ol>
-<li>You need to install a special version of xsane, which you can enable by amending <tt>/etc/nixos/configuration.nix</tt> as follows:
+<li>Enable GIMP support in xsane by editing <tt>/etc/nixos/configuration.nix.</tt> Remove <tt>pkgs.xsane</tt> from your package list, and use the following instead:
 <syntaxhighlight lang="nix">{
-   ...
+   #...
-   nixpkgs.config.packageOverrides = pkgs: {
+   environment.systemPackages = [
-     xsaneGimp = pkgs.xsane.override { gimpSupport = true; };
+     (pkgs.xsane.override { gimpSupport = true; })
-   };
+   ];
-   ...
+   #...
 }</syntaxhighlight></li>
 <li>Rebuild: <syntaxhighlight lang="console">$ sudo nixos-rebuild switch</syntaxhighlight></li>
@@ Line 148: / Line 161: @@
 ==Network scanning==
-If NixOs cannot find a scanner located on your network, you may be interested in adding in your <tt>configuration.nix</tt>:
+If NixOS cannot find a scanner located on your network, you may be interested in adding in your <tt>configuration.nix</tt>:
 <syntaxhighlight lang="nix">{
@@ Line 174: / Line 187: @@
 ==Using the scanner button==
+{{WOC}}
 Many scanners feature a hardware button which makes for very convenient operation, especially in combination with an automated document processing system like <tt>paperless</tt>.  NixOS includes the scanner button daemon <tt>scanbd</tt> which can be used for this purpose; however, its setup isn't terribly user friendly.
@@ Line 366: / Line 380: @@
        };
 }</syntaxhighlight>
 ==See also==