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uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

Browse source 
https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>
This commit is contained in:
Anton Arapov 2021-04-03 12:58:10 +02:00 • committed by Alan Daniels
commit 56de2bcd43
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42
nixos/doc/manual/from_md/administration/rollback.section.xml Normal file
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<section xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="sec-rollback">
<title>Rolling Back Configuration Changes</title>
<para>
After running <literal>nixos-rebuild</literal> to switch to a new
configuration, you may find that the new configuration doesn’t work
very well. In that case, there are several ways to return to a
previous configuration.
</para>
<para>
First, the GRUB boot manager allows you to boot into any previous
configuration that hasn’t been garbage-collected. These
configurations can be found under the GRUB submenu <quote>NixOS -
All configurations</quote>. This is especially useful if the new
configuration fails to boot. After the system has booted, you can
make the selected configuration the default for subsequent boots:
</para>
<programlisting>
# /run/current-system/bin/switch-to-configuration boot
</programlisting>
<para>
Second, you can switch to the previous configuration in a running
system:
</para>
<programlisting>
# nixos-rebuild switch --rollback
</programlisting>
<para>
This is equivalent to running:
</para>
<programlisting>
# /nix/var/nix/profiles/system-N-link/bin/switch-to-configuration switch
</programlisting>
<para>
where <literal>N</literal> is the number of the NixOS system
configuration. To get a list of the available configurations, do:
</para>
<programlisting>
$ ls -l /nix/var/nix/profiles/system-*-link
...
lrwxrwxrwx 1 root root 78 Aug 12 13:54 /nix/var/nix/profiles/system-268-link -&gt; /nix/store/202b...-nixos-13.07pre4932_5a676e4-4be1055
</programlisting>
</section>