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home-manager/modules/targets/generic-linux.nix
Robert Helgesson 5f433eb164
Move platform check into modules
Before, loading a module would be guarded by an optional platform
condition. This made it possible to avoid loading and evaluating a
module if it did not support the host platform.

Unfortunately, this made it impossible to share a single configuration
between GNU/Linux and Darwin hosts, which some wish to do.

This removes the conditional load and instead inserts host platform
assertions in the modules that are platform specific.

Fixes #1906
2021-07-18 20:43:22 +02:00

76 lines
2.2 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.targets.genericLinux;
profileDirectory = config.home.profileDirectory;
in {
imports = [
(mkRenamedOptionModule [ "targets" "genericLinux" "extraXdgDataDirs" ] [
"xdg"
"systemDirs"
"data"
])
];
options.targets.genericLinux = {
enable = mkEnableOption "" // {
description = ''
Whether to enable settings that make Home Manager work better on
GNU/Linux distributions other than NixOS.
'';
};
};
config = mkIf cfg.enable {
assertions = [
(hm.assertions.assertPlatform "targets.genericLinux" pkgs platforms.linux)
];
xdg.systemDirs.data = [
# Nix profiles
"\${NIX_STATE_DIR:-/nix/var/nix}/profiles/default/share"
"${profileDirectory}/share"
# Distribution-specific
"/usr/share/ubuntu"
"/usr/local/share"
"/usr/share"
"/var/lib/snapd/desktop"
];
home.sessionVariablesExtra = ''
. "${pkgs.nix}/etc/profile.d/nix.sh"
# reset TERM with new TERMINFO available (if any)
export TERM="$TERM"
'';
# We need to source both nix.sh and hm-session-vars.sh as noted in
# https://github.com/nix-community/home-manager/pull/797#issuecomment-544783247
programs.bash.initExtra = ''
. "${pkgs.nix}/etc/profile.d/nix.sh"
. "${profileDirectory}/etc/profile.d/hm-session-vars.sh"
'';
systemd.user.sessionVariables = let
# https://github.com/archlinux/svntogit-packages/blob/packages/ncurses/trunk/PKGBUILD
# https://salsa.debian.org/debian/ncurses/-/blob/master/debian/rules
# https://src.fedoraproject.org/rpms/ncurses/blob/main/f/ncurses.spec
# https://gitweb.gentoo.org/repo/gentoo.git/tree/sys-libs/ncurses/ncurses-6.2-r1.ebuild
distroTerminfoDirs = concatStringsSep ":" [
"/etc/terminfo" # debian, fedora, gentoo
"/lib/terminfo" # debian
"/usr/share/terminfo" # package default, all distros
];
in {
NIX_PATH = "$HOME/.nix-defexpr/channels\${NIX_PATH:+:}$NIX_PATH";
TERMINFO_DIRS =
"${profileDirectory}/share/terminfo:$TERMINFO_DIRS\${TERMINFO_DIRS:+:}${distroTerminfoDirs}";
};
};
}