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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.system;
in
{
options = {
system.patches = mkOption {
type = types.listOf types.path;
default = [ ];
example = literalExpression ''
[
(pkgs.writeText "bashrc.patch" ''''
--- a/etc/bashrc
+++ b/etc/bashrc
@@ -8,3 +8,5 @@
shopt -s checkwinsize
[ -r "/etc/bashrc_$TERM_PROGRAM" ] && . "/etc/bashrc_$TERM_PROGRAM"
+
+if test -e /etc/static/bashrc; then . /etc/static/bashrc; fi
'''')
]
'';
description = ''
Set of patches to apply to {file}`/`.
::: {.warning}
This can modify everything so use with caution.
:::
Useful for safely changing system files. Unlike the etc module this
won't remove or modify files with unexpected content.
'';
};
};
config = {
system.build.patches = pkgs.runCommand "patches"
{ preferLocalBuild = true; }
''
mkdir -p $out/patches
cd $out/patches
${concatMapStringsSep "\n" (f: "ln -s '${f}' $(basename '${f}')") cfg.patches}
'';
system.activationScripts.patches.text = ''
# Applying patches to /.
echo "applying patches..." >&2
for f in /run/current-system/patches/*; do
[[ -e "$f" ]] || break # handle when directory is empty
f=''${f#/run/current-system/patches/}
if [[ ! -e "${config.system.build.patches}/patches/$f" ]]; then
patch --force --reverse --backup -d / -p1 < "/run/current-system/patches/$f" || true
fi
done
${concatMapStringsSep "\n" (f: ''
f="$(basename ${f})"
if ! patch --force --reverse --dry-run -d / -p1 < '${f}' &> /dev/null; then
patch --forward --backup -d / -p1 < '${f}' || true
fi
'') cfg.patches}
'';
};
}
|
