[bug#68589] [PATCH] Add guix-home-service-type

[Lars Rustand]

Hoping to upstream this nice service from RDE. This service allows to
embed a home environment in a operating-system declaration.

Original source: 
https://git.sr.ht/~abcdw/rde/tree/master/item/src/gnu/services/home.scm

Change-Id: I42976cae9dd1580dc07dc866cd851294c7921725
---
 gnu/services/home.scm | 47 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 gnu/services/home.scm

diff --git a/gnu/services/home.scm b/gnu/services/home.scm
new file mode 100644
index 0000000000..868eafbec8
--- /dev/null
+++ b/gnu/services/home.scm
@@ -0,0 +1,47 @@
+(define-module (gnu services home)
+  #:use-module (gnu services)
+  #:use-module (gnu services shepherd)
+
+  #:use-module (guix gexp)
+  #:use-module (guix packages)
+  #:use-module (guix records)
+
+  #:export (guix-home-service-type))
+
+
+(define (guix-home-shepherd-service config)
+  (map
+   (lambda (x)
+     (let ((user (car x))
+           (he (cdr x)))
+       (shepherd-service
+        (documentation "Activate Guix Home.")
+        ;; Originally requirement was user-homes, but for recently it stopped
+        ;; working, seems like it was executed too early and didn't work, so
+        ;; we switched to term-tty1.
+        (requirement '(term-tty1))
+        (provision (list (symbol-append 'guix-home- (string->symbol user))))
+        (one-shot? #t)
+        (auto-start? #t)
+        (start #~(make-forkexec-constructor
+                  '(#$(file-append he "/activate"))
+                  #:user #$user
+                  #:environment-variables
+                  (list (string-append "HOME=" (passwd:dir (getpw #$user))))
+                  #:group (group:name (getgrgid (passwd:gid (getpw #$user))))))
+        (stop #~(make-kill-destructor)))))
+     config))
+
+(define (guix-home-gc-roots config)
+  (map cdr config))
+
+(define guix-home-service-type
+  (service-type
+   (name 'guix-home)
+   (description "Setups home-environments specified in the value.")
+   (extensions (list (service-extension
+                      shepherd-root-service-type
+                      guix-home-shepherd-service)))
+   ;; (compose append)
+   ;; (extend append)
+   (default-value '())))

base-commit: 162d6a2fdd6af13272967c77347a54934ecb45e6
--
2.41.0