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-rw-r--r--doc/guix.texi13
-rw-r--r--gnu/services/xorg.scm13
2 files changed, 26 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 7504deab4e..b44811f3cb 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -4968,6 +4968,19 @@ Return a service that spawns the SLiM graphical login manager, which in
turn starts the X display server with @var{startx}, a command as returned by
@code{xorg-start-command}.
+@cindex X session
+
+SLiM automatically looks for session types described by the @file{.desktop}
+files in @file{/run/current-system/profile/share/xsessions} and allows users
+to choose a session from the log-in screen using @kbd{F1}. Packages such as
+@var{xfce}, @var{sawfish}, and @var{ratpoison} provide @file{.desktop} files;
+adding them to the system-wide set of packages automatically makes them
+available at the log-in screen.
+
+In addition, @file{~/.xsession} files are honored. When available,
+@file{~/.xsession} must be an executable that starts a window manager
+and/or other X clients.
+
When @var{allow-empty-passwords?} is true, allow logins with an empty
password. When @var{auto-login?} is true, log in automatically as
@var{default-user}.
diff --git a/gnu/services/xorg.scm b/gnu/services/xorg.scm
index 8fd003f96a..4821614ba2 100644
--- a/gnu/services/xorg.scm
+++ b/gnu/services/xorg.scm
@@ -207,6 +207,19 @@ which should be passed to this script as the first argument. If not, the
turn starts the X display server with @var{startx}, a command as returned by
@code{xorg-start-command}.
+@cindex X session
+
+SLiM automatically looks for session types described by the @file{.desktop}
+files in @file{/run/current-system/profile/share/xsessions} and allows users
+to choose a session from the log-in screen using @kbd{F1}. Packages such as
+@var{xfce}, @var{sawfish}, and @var{ratpoison} provide @file{.desktop} files;
+adding them to the system-wide set of packages automatically makes them
+available at the log-in screen.
+
+In addition, @file{~/.xsession} files are honored. When available,
+@file{~/.xsession} must be an executable that starts a window manager
+and/or other X clients.
+
When @var{allow-empty-passwords?} is true, allow logins with an empty
password. When @var{auto-login?} is true, log in automatically as
@var{default-user} with @var{auto-login-session}.