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usernix: Fixes following testing

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Geoffrey Preud'homme 2024-01-04 19:45:07 +01:00
parent 8b78cad60c
commit e1c041368b
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3 changed files with 59 additions and 18 deletions
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6
ensure_nix.sh
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@ -48,8 +48,12 @@ then
"$nix_installer" --no-daemon --yes --no-channel-add --no-modify-profile
fi
# TODO This installs nix in nix-env, which conflicts with home-manager activation.
# Workaround is temporarily set /nix/store-xxx-nix/bin in PATH
. "$nix_profile_path"
"${SCRIPT_DIR}/add_channels.sh"
# TODO Useful the first time, but it becomes a bit long after a while
# "${SCRIPT_DIR}/add_channels.sh"
exec "$@"

2
hm/desktop.nix
View file

@ -129,7 +129,7 @@ in
"${mod}+Shift+d" = "${rofi} -modi drun -show drun";
# Start Applications
"${mod}+Return" = "exec ${
pkgs.writeShellScript "terminal" "${config.programs.alacritty.package}/bin/alacritty msg create-window || exec ${config.programs.alacritty.package}/bin/alacritty -e zsh"
pkgs.writeShellScript "terminal" "${config.programs.alacritty.package}/bin/alacritty msg create-window -e zsh || exec ${config.programs.alacritty.package}/bin/alacritty -e zsh"
# -e zsh is for systems where I can't configure my user's shell
# TODO Is a shell script even required?
}";

69
hm/usernix/default.nix
View file

@ -1,6 +1,7 @@
{ pkgs, lib, config, ... }:
let
ensureNixPath = "${config.xdg.configHome}/dotfiles/ensure_nix.sh";
# TODO Can we maybe use a lighter version of this?
in
{
config = lib.mkIf config.frogeye.userNix {
@ -9,43 +10,79 @@ in
# is started outside of it, so it cannot access /nix. So we need to:
# - Ensure files systemd access aren't via /nix.
# Sometimes there's multiple layers of redirection, so easiest way is
# to copy the file outside the repository, but if using regular files
# directly home-manager will complain that it will overwrite
# something it didn't write.
# to copy the file outside the store.
# - Wrap services entrypoints into a proot wrapper
prootSystemd = lib.hm.dag.entryAfter [ "linkGeneration" ] [ "reloadSystemd" ] ''
prootSystemd = lib.hm.dag.entryBetween [ "reloadSystemd" ] [ "linkGeneration" ] ''
cd ${config.xdg.configHome}/systemd/user
${pkgs.findutils}/bin/find . -type l | while read path
${pkgs.findutils}/bin/find . -maxdepth 1 -type l | while read path
do
${pkgs.gnused}/bin/sed 's|^Exec\S\+=|\0${ensureNixPath} |' "$path" > "''${path}-proot"
rm "$path"
ln -s "''${path}-proot" "$path"
temp="$(mktemp -p "$PWD")"
${pkgs.gnused}/bin/sed 's|^Exec\S\+=|\0${ensureNixPath} |' "$path" > "$temp"
$DRY_RUN_CMD mv $VERBOSE_ARG "$temp" "$path"
rm -f "$temp"
done
# Targets (need to be symlinks to original)
${pkgs.findutils}/bin/find . -mindepth 2 -maxdepth 2 -type l | while read path
do
$DRY_RUN_CMD rm $VERBOSE_ARG "$path"
$DRY_RUN_CMD ln $VERBOSE_ARG -s "../$(basename "$path")" "$path"
done
'';
# Unless files were created by HM, it will complain that something is in the way, so we delete them.
# This is very ugly, as you're not supposed to write things before writeBoundary, but hey
prootSystemdClean = lib.hm.dag.entryBefore [ "checkLinkTargets" ] ''
$DRY_RUN_CMD rm $VERBOSE_ARG -rf ${config.xdg.configHome}/systemd/user
'';
# I wonder if it's possible to do this in a slightly more Nix way, without causing infinite recursion
# Create a graphical entrypoint by overriding one of the OS programs
graphicalEntrypoints =
let
graphicalBin = "${config.home.homeDirectory}/.local/bin";
graphicalProfile = pkgs.writeTextFile {
name = "graphical-profile";
text = ''
export PATH="${graphicalBin}:$PATH"
'';
};
graphicalEntrypoint = pkgs.writeTextFile {
name = "graphical-entrypoint";
text = ''
#!/usr/bin/env sh
#!/bin/sh
exec ${ensureNixPath} ${config.xsession.scriptPath}
'';
executable = true;
};
in
lib.mkIf config.frogeye.desktop.xorg
lib.hm.dag.entryAfter [ "writeBoundary" ] ''
cp -f ${graphicalEntrypoint} ${config.home.homeDirectory}/.local/bin/cinnamon-session-cinnamon
# lib.mkIf config.frogeye.desktop.xorg # TODO Removed because wrong ordering or something?
lib.hm.dag.entryAfter [ "writeBoundary" ] ''
$DRY_RUN_CMD cp $VERBOSE_ARG -L -f ${graphicalProfile} ${config.home.homeDirectory}/.xprofile
$DRY_RUN_CMD cp $VERBOSE_ARG -L -f ${graphicalEntrypoint} ${graphicalBin}/cinnamon-session-cinnamon
'';
};
# Ubuntu gives you this for some reason, but it just makes warnings
xsession.initExtra = ''
unset LD_PRELOAD
'';
# Some systemd options don't work if you're running a proot inside, so they need to be relaxed
# TODO Following is what's necessary to remove for Syncthing to work. Might be applicable on all services.
# PrivateUsers=true
# RestrictNamespaces=true
# SystemCallFilter=@system-service
systemd.user = {
services = {
mpd.Service = {
# This tries to override PATH for some reason, which makes ensure_nix not work
Environment = lib.mkForce [ ];
# Since we're wrapping in ensure_nix, notifications for Type=notify
# will come from a process lower
NotifyAccess = "all";
};
# Below might be applicable on all services that use those options, but none is to test right now
syncthing.Service = {
PrivateUsers = lib.mkForce [ ];
RestrictNamespaces = lib.mkForce [ ];
SystemCallFilter = lib.mkForce [ ];
};
};
};
};
}