nixpkgs/nixos/modules/config/system-path.nix

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# This module defines the packages that appear in
# /run/current-system/sw.
{ config, lib, pkgs, ... }:
with lib;
let
requiredPackages = map (pkg: setPrio ((pkg.meta.priority or 5) + 3) pkg)
[ pkgs.acl
pkgs.attr
pkgs.bashInteractive # bash with ncurses support
pkgs.bzip2
pkgs.coreutils-full
pkgs.cpio
pkgs.curl
pkgs.diffutils
pkgs.findutils
pkgs.gawk
pkgs.stdenv.cc.libc
pkgs.getent
pkgs.getconf
pkgs.gnugrep
pkgs.gnupatch
pkgs.gnused
pkgs.gnutar
pkgs.gzip
pkgs.xz
pkgs.less
pkgs.libcap
pkgs.ncurses
pkgs.netcat
config.programs.ssh.package
pkgs.mkpasswd
pkgs.procps
pkgs.su
pkgs.time
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pkgs.util-linux
pkgs.which
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pkgs.zstd
];
defaultPackageNames =
[ "nano"
"perl"
"rsync"
"strace"
];
defaultPackages =
map
(n: let pkg = pkgs.${n}; in setPrio ((pkg.meta.priority or 5) + 3) pkg)
defaultPackageNames;
defaultPackagesText = "[ ${concatMapStringsSep " " (n: "pkgs.${n}") defaultPackageNames } ]";
in
{
options = {
environment = {
systemPackages = mkOption {
type = types.listOf types.package;
default = [];
example = literalExpression "[ pkgs.firefox pkgs.thunderbird ]";
description = ''
The set of packages that appear in
/run/current-system/sw. These packages are
automatically available to all users, and are
automatically updated every time you rebuild the system
configuration. (The latter is the main difference with
installing them in the default profile,
<filename>/nix/var/nix/profiles/default</filename>.
'';
};
defaultPackages = mkOption {
type = types.listOf types.package;
default = defaultPackages;
defaultText = literalDocBook ''
these packages, with their <literal>meta.priority</literal> numerically increased
(thus lowering their installation priority):
<programlisting>${defaultPackagesText}</programlisting>
'';
example = [];
description = ''
Set of default packages that aren't strictly necessary
for a running system, entries can be removed for a more
minimal NixOS installation.
Note: If <package>pkgs.nano</package> is removed from this list,
make sure another editor is installed and the
<literal>EDITOR</literal> environment variable is set to it.
Environment variables can be set using
<option>environment.variables</option>.
Like with systemPackages, packages are installed to
<filename>/run/current-system/sw</filename>. They are
automatically available to all users, and are
automatically updated every time you rebuild the system
configuration.
'';
};
pathsToLink = mkOption {
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type = types.listOf types.str;
# Note: We need `/lib' to be among `pathsToLink' for NSS modules
# to work.
default = [];
example = ["/"];
description = "List of directories to be symlinked in <filename>/run/current-system/sw</filename>.";
};
extraOutputsToInstall = mkOption {
type = types.listOf types.str;
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default = [ ];
example = [ "doc" "info" "devdoc" ];
description = "List of additional package outputs to be symlinked into <filename>/run/current-system/sw</filename>.";
};
extraSetup = mkOption {
type = types.lines;
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default = "";
description = "Shell fragments to be run after the system environment has been created. This should only be used for things that need to modify the internals of the environment, e.g. generating MIME caches. The environment being built can be accessed at $out.";
};
};
system = {
path = mkOption {
internal = true;
description = ''
The packages you want in the boot environment.
'';
};
};
};
config = {
environment.systemPackages = requiredPackages ++ config.environment.defaultPackages;
environment.pathsToLink =
[ "/bin"
"/etc/xdg"
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"/etc/gtk-2.0"
"/etc/gtk-3.0"
"/lib" # FIXME: remove and update debug-info.nix
"/sbin"
"/share/emacs"
"/share/hunspell"
"/share/nano"
"/share/org"
"/share/themes"
"/share/vim-plugins"
"/share/vulkan"
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"/share/kservices5"
"/share/kservicetypes5"
"/share/kxmlgui5"
"/share/systemd"
"/share/thumbnailers"
];
system.path = pkgs.buildEnv {
name = "system-path";
paths = config.environment.systemPackages;
inherit (config.environment) pathsToLink extraOutputsToInstall;
ignoreCollisions = true;
# !!! Hacky, should modularise.
# outputs TODO: note that the tools will often not be linked by default
postBuild =
''
# Remove wrapped binaries, they shouldn't be accessible via PATH.
find $out/bin -maxdepth 1 -name ".*-wrapped" -type l -delete
if [ -x $out/bin/glib-compile-schemas -a -w $out/share/glib-2.0/schemas ]; then
$out/bin/glib-compile-schemas $out/share/glib-2.0/schemas
fi
${config.environment.extraSetup}
'';
};
};
}