[PATCH 4/7] gnu: polkit: Use elogind for seat management.

[Andy Wingo]

* gnu/packages/polkit.scm (polkit): Depend on elogind.
---
 gnu/packages/polkit.scm | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/polkit.scm b/gnu/packages/polkit.scm
index 172b0e1..6a89d6b 100644
--- a/gnu/packages/polkit.scm
+++ b/gnu/packages/polkit.scm
@@ -23,6 +23,7 @@
   #:use-module (guix build-system cmake)
   #:use-module (guix build-system gnu)
   #:use-module (gnu packages)
+  #:use-module (gnu packages freedesktop)
   #:use-module (gnu packages glib)
   #:use-module (gnu packages gnuzilla)
   #:use-module (gnu packages linux)
@@ -44,13 +45,33 @@
              (sha256
               (base32
                "109w86kfqrgz83g9ivggplmgc77rz8kx8646izvm2jb57h4rbh71"))
-             (patches (list (search-patch "polkit-drop-test.patch")))))
+             (patches (list (search-patch "polkit-drop-test.patch")))
+             (modules '((guix build utils)))
+             (snippet
+              '(begin
+                 (use-modules (guix build utils))
+                 (substitute* "configure"
+                   ;; Replace libsystemd-login with libelogind.
+                   (("libsystemd-login") "libelogind")
+                   ;; Skip the sanity check that the current system runs
+                   ;; systemd.
+                   (("test ! -d /sys/fs/cgroup/systemd/") "false"))
+                 (substitute* "src/polkit/polkitunixsession-systemd.c"
+                   (("systemd") "elogind"))
+                 (substitute* 
"src/polkitbackend/polkitbackendsessionmonitor-systemd.c"
+                   (("systemd") "elogind"))
+                 (substitute* "src/polkitbackend/polkitbackendjsauthority.c"
+                   (("systemd") "elogind"))))))
     (build-system gnu-build-system)
     (inputs
       `(("expat" ,expat)
         ("glib:bin" ,glib "bin") ; for glib-mkenums
+        ("elogind" ,elogind)
         ("intltool" ,intltool)
         ("linux-pam" ,linux-pam)
+        ;; FIXME: Shouldn't need libcap, it should be correctly propagated
+        ;; from elogind.
+        ("libcap" ,libcap)
         ("mozjs" ,mozjs)
         ("nspr" ,nspr)))
     (propagated-inputs
-- 
2.4.3