fix(syschdemd): exit code

[nzbr]

This fixes #138, by using systemd-run instead of machinectl, but breaks systemd user sessions and dbus

@K900: If we can get those to work with systemd-run, it will probably work with native systemd as well (because I think this is what MS is using as well)

[K900]

No, they're spawning a shell as a child of /init, so it's not even in the right slice.

[nzbr]

I wanted to find out, how distrod gets around that, and the answer seems to be that they didn't:

PS C:\Users\nzbr> wsl -d Distrod systemctl --user
Failed to connect to bus: No such file or directory

[nzbr]

genie seems to use machinectl

[nzbr]

A possible solution would be to use machinectl when launching the default shell and systemd-run when a command is specified. I'd rather find a way to always use systemd-run though

[nzbr]

I got it to work!

@K900 We might be able to use the same approach (using runuser) for native systemd. That would mean having a wrapper script as the root shell again, but it'd be much simpler because we don't need the namespace

[SuperSandro2000]

@nzbr what do you think about adding me as a collaborator to this repo?

[nzbr]

@nzbr what do you think about adding me as a collaborator to this repo?

Given that you're pretty active on here, that's probably a good idea - same goes for @K900
Unfortunately, I don't have the necessary permission to do that though

[SuperSandro2000]

Starts now without crashing.

ssh-agent is still broken because of SSH_AUTH_SOCK=/mnt/wslg/runtime-dir/ssh-agent but NixOS placing the socket in the default location.

systemctl status diff between before and after this PR:

I think TERMINFO_DIRS is set wrong by wezterm.

Otherwise things seem to work.

--- before	2022-11-11 18:06:50.116889800 +0100
+++ after	2022-11-11 18:07:26.142133500 +0100
@@ -2,28 +2,47 @@
     State: running
      Jobs: 0 queued
    Failed: 0 units
-    Since: Fri 2022-11-11 18:06:28 CET; 22s ago
+    Since: Fri 2022-11-11 18:07:19 CET; 6s ago
    CGroup: /
            ├─user.slice 
            │ └─user-1000.slice 
            │   ├─user@1000.service 
            │   │ ├─app.slice 
            │   │ │ ├─ssh-agent.service 
-           │   │ │ │ └─ 70 /nix/store/hfmwjjkz0c2p9ggcqw22rgnhx0jjm84z-openssh-9.1p1/bin/ssh-agent -a /run/user/1000/ssh-agent
+           │   │ │ │ └─ 69 /nix/store/hfmwjjkz0c2p9ggcqw22rgnhx0jjm84z-openssh-9.1p1/bin/ssh-agent -a /run/user/1000/ssh-agent
            │   │ │ └─auto-fix-vscode-server.service 
            │   │ │   ├─  63 /nix/store/y0g1mvsr6vygr61f9znljik9kl0x0inc-bash-5.1-p16/bin/bash /nix/store/ngx73rfq5mx9s4zkgjjnypciizq4n7aa-auto-fix-vscode-server.sh
-           │   │ │   ├─ 116 /nix/store/y0g1mvsr6vygr61f9znljik9kl0x0inc-bash-5.1-p16/bin/bash /nix/store/ngx73rfq5mx9s4zkgjjnypciizq4n7aa-auto-fix-vscode-server.sh
-           │   │ │   └─ 117 inotifywait -q -m -e CREATE,ISDIR -e DELETE_SELF --format %w%f:%e /home/sandro/.vscode-server/bin
+           │   │ │   ├─ 118 /nix/store/y0g1mvsr6vygr61f9znljik9kl0x0inc-bash-5.1-p16/bin/bash /nix/store/ngx73rfq5mx9s4zkgjjnypciizq4n7aa-auto-fix-vscode-server.sh
+           │   │ │   └─ 119 inotifywait -q -m -e CREATE,ISDIR -e DELETE_SELF --format %w%f:%e /home/sandro/.vscode-server/bin
            │   │ └─init.scope 
            │   │   ├─ 56 /nix/store/isg9b516rmlf6ri8c29jm9ibl1kg0sa7-systemd-249.12/lib/systemd/systemd --user
            │   │   └─ 57 (sd-pam)
            │   └─session-c1.scope 
-           │     ├─  54 /run/current-system/sw/bin/bash
-           │     ├─  68 (sd-pam)
-           │     ├─  93 /nix/store/4wnc0503iawwc2166jfwkf0zmd7wr0ps-cod-0.1.0/bin/cod api forked-daemon 87
+           │     ├─  54 /nix/store/15y79343wxnalk8629v9vg63a31pbwk7-util-linux-2.38.1-bin/bin/runuser -u sandro -- /bin/sh -c declare -x COLORTERM="truecolor"
+declare -x DISPLAY=":0"
+declare -x HOSTTYPE="x86_64"
+declare -x LANG="en_US.UTF-8"
+declare -x NAME="francium"
+declare -x OLDPWD
+declare -x PATH="/run/wrappers/bin:/nix/store/xq4g38m5ppg78z7bzfxyy2s8ii693k74-coreutils-9.1/bin:/nix/store/vdmbj6w77pg29fn77ndn659ngbxjsq4w-daemonize-1.7.8/bin:/nix/store/4xynblhic6sq4paq2ra4ql535yyvracs-glibc-2.35-163-bin/bin:/nix/store/sqypvzmrsl8hil564xfk8n5w51gq47h0-gnugrep-3.7/bin:/nix/store/z5qg6m93yv2wsij772rsljah3ahw1m8b-systemd-251.5/bin:/nix/store/15y79343wxnalk8629v9vg63a31pbwk7-util-linux-2.38.1-bin/bin:/nix/store/ldaflixlmv5dills5dq960i6m1s9pzq0-which-2.21/bin:/nix/store/53ssjlp0w2dsbifdg9jbykypq05205c2-nixos-wsl-systemd-wrapper/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/wsl/lib"
+declare -x PULSE_SERVER="/mnt/wslg/PulseServer"
+declare -x PWD="/mnt/c/Users/user"
+declare -x SHLVL="1"
+declare -x TERM="wezterm"
+declare -x TERMINFO_DIRS="/home/user/.nix-profile/share/terminfo"
+declare -x TERM_PROGRAM="WezTerm"
+declare -x TERM_PROGRAM_VERSION="20220905-102802-7d4b8249"
+declare -x WAYLAND_DISPLAY="wayland-0"
+declare -x WSL2_GUI_APPS_ENABLED="1"
+declare -x WSLENV="TERMINFO_DIRS:TERM:COLORTERM:TERM_PROGRAM:TERM_PROGRAM_VERSION"
+declare -x WSL_DISTRO_NAME="NixOS"
+declare -x WSL_INTEROP="/run/WSL/6_interop"
+declare -x XDG_RUNTIME_DIR="/mnt/wslg/runtime-dir"; source /etc/set-environment; exec /run/current-system/sw/bin/bash
+           │     ├─  67 /run/current-system/sw/bin/bash
+           │     ├─  93 /nix/store/4wnc0503iawwc2166jfwkf0zmd7wr0ps-cod-0.1.0/bin/cod api forked-daemon 86
            │     ├─ 131 /run/current-system/sw/bin/bash
-           │     ├─ 134 /nix/store/5ysxr04vk1v2arpyl6brd0xzlig5sds8-gitstatus-1.5.4/bin/gitstatusd -G v1.5.4 --parent-pid=54 --num-threads=8 --max-num-staged=1 --max-num-unstaged=1 --max-num-conflicted=1 --max-num-untracked=1 --dirty-max-index-size=-1 --repo-ttl-seconds=3600
-           │     └─ 348 systemctl status
+           │     ├─ 134 /nix/store/5ysxr04vk1v2arpyl6brd0xzlig5sds8-gitstatus-1.5.4/bin/gitstatusd -G v1.5.4 --parent-pid=67 --num-threads=8 --max-num-staged=1 --max-num-unstaged=1 --max-num-conflicted=1 --max-num-untracked=1 --dirty-max-index-size=-1 --repo-ttl-seconds=3600
+           │     └─ 237 systemctl status
            ├─init.scope 
            │ └─ 1 systemd
            └─system.slice 

[SuperSandro2000]

git gpg signing is broken with those changes. Not sure why and I am not looking forward to debugging it.

[nzbr]

I don't have SSH_AUTH_SOCK set, because I don't use the SSH agent. Was it working before the patch?

[SuperSandro2000]

No, but I hoped it would work now. Let me debug that this later.