29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
141 lines
3.3 KiB
Nix
141 lines
3.3 KiB
Nix
# Management of static files in /etc.
|
|
|
|
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
etc' = filter (f: f.enable) (attrValues config.environment.etc);
|
|
|
|
etc = pkgs.stdenv.mkDerivation {
|
|
name = "etc";
|
|
|
|
builder = ./make-etc.sh;
|
|
|
|
preferLocalBuild = true;
|
|
|
|
/* !!! Use toXML. */
|
|
sources = map (x: x.source) etc';
|
|
targets = map (x: x.target) etc';
|
|
modes = map (x: x.mode) etc';
|
|
uids = map (x: x.uid) etc';
|
|
gids = map (x: x.gid) etc';
|
|
};
|
|
|
|
in
|
|
|
|
{
|
|
|
|
###### interface
|
|
|
|
options = {
|
|
|
|
environment.etc = mkOption {
|
|
type = types.loaOf types.optionSet;
|
|
default = {};
|
|
example = literalExample ''
|
|
{ hosts =
|
|
{ source = "/nix/store/.../etc/dir/file.conf.example";
|
|
mode = "0440";
|
|
};
|
|
"default/useradd".text = "GROUP=100 ...";
|
|
}
|
|
'';
|
|
description = ''
|
|
Set of files that have to be linked in <filename>/etc</filename>.
|
|
'';
|
|
|
|
options = singleton ({ name, config, ... }:
|
|
{ options = {
|
|
|
|
enable = mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = ''
|
|
Whether this /etc file should be generated. This
|
|
option allows specific /etc files to be disabled.
|
|
'';
|
|
};
|
|
|
|
target = mkOption {
|
|
type = types.str;
|
|
description = ''
|
|
Name of symlink (relative to
|
|
<filename>/etc</filename>). Defaults to the attribute
|
|
name.
|
|
'';
|
|
};
|
|
|
|
text = mkOption {
|
|
default = null;
|
|
type = types.nullOr types.lines;
|
|
description = "Text of the file.";
|
|
};
|
|
|
|
source = mkOption {
|
|
type = types.path;
|
|
description = "Path of the source file.";
|
|
};
|
|
|
|
mode = mkOption {
|
|
type = types.str;
|
|
default = "symlink";
|
|
example = "0600";
|
|
description = ''
|
|
If set to something else than <literal>symlink</literal>,
|
|
the file is copied instead of symlinked, with the given
|
|
file mode.
|
|
'';
|
|
};
|
|
|
|
uid = mkOption {
|
|
default = 0;
|
|
type = types.int;
|
|
description = ''
|
|
UID of created file. Only takes affect when the file is
|
|
copied (that is, the mode is not 'symlink').
|
|
'';
|
|
};
|
|
|
|
gid = mkOption {
|
|
default = 0;
|
|
type = types.int;
|
|
description = ''
|
|
GID of created file. Only takes affect when the file is
|
|
copied (that is, the mode is not 'symlink').
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
config = {
|
|
target = mkDefault name;
|
|
source = mkIf (config.text != null)
|
|
(mkDefault (pkgs.writeText "etc-file" config.text));
|
|
};
|
|
|
|
});
|
|
|
|
};
|
|
|
|
};
|
|
|
|
|
|
###### implementation
|
|
|
|
config = {
|
|
|
|
system.build.etc = etc;
|
|
|
|
system.activationScripts.etc = stringAfter [ "stdio" ]
|
|
''
|
|
# Set up the statically computed bits of /etc.
|
|
echo "setting up /etc..."
|
|
${pkgs.perl}/bin/perl ${./setup-etc.pl} ${etc}/etc
|
|
'';
|
|
|
|
};
|
|
|
|
}
|