From a2e592cc49850f32b59d0ab2a66ae0871f525c65 Mon Sep 17 00:00:00 2001
From: e-nikolov <emil.e.nikolov@gmail.com>
Date: Fri, 8 Sep 2023 07:02:56 +0200
Subject: [PATCH] home-manager: improve nix profile detection

If `nix.settings.use-xdg-base-directories` is true, the
`~/.nix-profile` directory may not exist, and `home.profileDirectory`
should be checked instead.

Co-authored-by: Bruno BELANYI <bruno@belanyi.fr>
---
 home-manager/home-manager    | 8 +++++++-
 modules/home-environment.nix | 6 +++---
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/home-manager/home-manager b/home-manager/home-manager
index 6f2ba38b6..2549cc57d 100644
--- a/home-manager/home-manager
+++ b/home-manager/home-manager
@@ -29,7 +29,9 @@ function removeByName() {
 }
 
 function setNixProfileCommands() {
-    if [[ -e $HOME/.nix-profile/manifest.json ]] ; then
+    if  [[ -e $HOME/.nix-profile/manifest.json \
+        || -e ${XDG_STATE_HOME:-$HOME/.local/state}/nix/profile/manifest.json ]] ; then
+
         LIST_OUTPATH_CMD="nix profile list"
         REMOVE_CMD="removeByName"
     else
@@ -406,6 +408,10 @@ $xdgVars
   #
   # or
   #
+  #  ~/.local/state/nix/profiles/profile/etc/profile.d/hm-session-vars.sh
+  #
+  # or
+  #
   #  /etc/profiles/per-user/$USER/etc/profile.d/hm-session-vars.sh
   #
   home.sessionVariables = {
diff --git a/modules/home-environment.nix b/modules/home-environment.nix
index 870464608..03e32c087 100644
--- a/modules/home-environment.nix
+++ b/modules/home-environment.nix
@@ -175,7 +175,7 @@ in
       done automatically if the shell configuration is managed by Home
       Manager. If not, then you must source the
 
-        ~/.nix-profile/etc/profile.d/hm-session-vars.sh
+        ${cfg.profileDirectory}/etc/profile.d/hm-session-vars.sh
 
       file yourself.
     '')
@@ -585,7 +585,7 @@ in
       if config.submoduleSupport.externalPackageInstall
       then
         ''
-          if [[ -e $HOME/.nix-profile/manifest.json ]] ; then
+          if [[ -e ${cfg.profileDirectory}/manifest.json ]] ; then
             nix profile list \
               | { grep 'home-manager-path$' || test $? = 1; } \
               | cut -d ' ' -f 4 \
@@ -623,7 +623,7 @@ in
             $DRY_RUN_CMD $oldNix profile install $1
           }
 
-          if [[ -e $HOME/.nix-profile/manifest.json ]] ; then
+          if [[ -e ${cfg.profileDirectory}/manifest.json ]] ; then
             INSTALL_CMD="nix profile install"
             INSTALL_CMD_ACTUAL="nixReplaceProfile"
             LIST_CMD="nix profile list"