From 181f59e7219fa3cfed36c05773ac6a8dc40e5571 Mon Sep 17 00:00:00 2001
From: Ryan Schanzenbacher <ryan@rschanz.org>
Date: Mon, 24 Aug 2026 01:24:20 -0400
Subject: ssh fix in guix

---
 users/ryan/linux/guix.nix | 55 ++++++++++++-----------------------------------
 1 file changed, 14 insertions(+), 41 deletions(-)

diff --git a/users/ryan/linux/guix.nix b/users/ryan/linux/guix.nix
index acee0f3..65e7053 100644
--- a/users/ryan/linux/guix.nix
+++ b/users/ryan/linux/guix.nix
@@ -1,22 +1,8 @@
-{ pkgs, inputs, ... }:
+{ pkgs, lib, inputs, ... }:
 
-# Workarounds specific to running home-manager on top of Guix System (as
-# opposed to NixOS, or some other foreign distro). Keep this narrow -
-# anything that would also apply to e.g. WSL belongs in ./foreign.nix
-# instead.
 {
-  # Guix doesn't run a systemd user session the way home-manager expects,
-  # so activation shouldn't try to start/restart systemd user units.
   systemd.user.startServices = false;
 
-  # Guix Home's login shell (bash, via /etc/passwd) sources ~/.bash_profile
-  # -> ~/.profile, which runs ~/.guix-home/setup-environment and
-  # ~/.guix-home/on-first-login. The latter is what actually starts this
-  # user's shepherd instance (which manages pipewire/pulseaudio and other
-  # home services) if it isn't running yet. zsh has no equivalent of
-  # ~/.profile, so with zsh as the login shell that chain never runs and
-  # shepherd (and anything it starts, e.g. audio) never comes up. Replicate
-  # it in .zprofile, which - like .bash_profile - only runs for login shells.
   programs.zsh.profileExtra = ''
     if [ -f "$HOME/.guix-home/setup-environment" ]; then
       HOME_ENVIRONMENT="$HOME/.guix-home"
@@ -26,41 +12,15 @@
     fi
   '';
 
-  # gtk3.nix (see ../linux.nix's gtk.* config) mirrors GTK settings into
-  # dconf, which needs a session D-Bus during activation. This host has no
-  # /etc/dbus-1/session.conf and no session bus running at switch time, so
-  # dconf's dbus-run-session activation step fails. GTK is still themed via
-  # gtk-3.0/gtk-4.0 settings.ini; dconf mainly matters for GNOME/libadwaita
-  # apps, which aren't in play here.
   dconf.enable = false;
 
-  # Guix Home used to run gpg-agent as a shepherd service and export
-  # SSH_AUTH_SOCK into the whole session before Hyprland started. That
-  # service is disabled now, and zsh's SSH_AUTH_SOCK export (see
-  # programs.zsh in common.nix) only reaches shells, not apps Hyprland
-  # spawns directly - so launch the agent and push the socket path into
-  # Hyprland's own env here instead. A NixOS host would have a real
-  # systemd --user session doing this via gpg-agent.socket activation,
-  # so this only belongs on Guix.
   wayland.windowManager.hyprland.extraConfig = ''
     exec-once = sh -c 'gpgconf --launch gpg-agent; hyprctl setenv SSH_AUTH_SOCK "$(gpgconf --list-dirs agent-ssh-socket)"'
   '';
 
-  # base-system.scm enables pcscd-service-type, so pcscd already owns the
-  # Yubikey's USB CCID interface. scdaemon's internal libusb CCID driver
-  # then fails to open the device (`ccid open error: skip`) and doesn't
-  # fall back to PC/SC on its own, so `gpg --card-status`/`--edit-card`
-  # report "No such device". Force scdaemon through pcscd instead. A NixOS
-  # host would only need this if it also runs services.pcscd itself.
   programs.gpg.scdaemonSettings.disable-ccid = true;
 
   home.packages = [
-    # hyprlock built by nix needs Guix's PAM libs preloaded to authenticate
-    # against Guix's PAM stack. Don't also preload Guix's libfontconfig.so
-    # here: it's a "fontconfig-minimal" build that lacks symbols (e.g.
-    # FcConfigSetDefaultSubstitute) which nix's pango expects, causing a
-    # symbol lookup error at startup. Let hyprlock use nix's own fontconfig
-    # from its normal closure instead.
     (pkgs.writeScriptBin "hyprlock" ''
       #! ${pkgs.bash}/bin/bash
       export LD_PRELOAD="/run/current-system/profile/lib/libpam.so.0:$LD_PRELOAD"
@@ -70,4 +30,17 @@
     # Guix's mesa doesn't match nixpkgs', so GL apps built by nix need nixGL.
     inputs.nixgl.packages.${pkgs.stdenv.hostPlatform.system}.nixGLIntel
   ];
+
+  # We need to correct the ssh config file's permissions on guix
+  # Remove the symlink and just install the store file directly
+  home.activation = {
+    fixSshPermissions = lib.hm.dag.entryAfter [ "linkGeneration" ] ''
+      run install -d -m 0700 "$HOME/.ssh"
+      if [ -L "$HOME/.ssh/config" ]; then
+        src="$(readlink -f "$HOME/.ssh/config")"
+        run rm -f "$HOME/.ssh/config"
+        run install -m 0600 "$src" "$HOME/.ssh/config"
+      fi
+    '';
+  };
 }
-- 
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