gnu: Add jwm.

* gnu/packages/wm.scm (jwm): New variable.

Signed-off-by: 宋文武 <iyzsong@member.fsf.org>

gnu/packages/wm.scm

@@ -2777,6 +2777,61 @@ (define-public hikari
 capabilities.  It is heavily inspired by the Calm Window manager(cwm).")
     (license license:bsd-2)))
 
+(define-public jwm
+  (package
+    (name "jwm")
+    (version "2.4.3")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append
+                    "https://github.com/joewing/jwm/releases/download/"
+                    "v" version "/jwm-" version ".tar.xz"))
+              (sha256
+               (base32
+                "1av7r9sp26r5l74zvwdmyyyzav29mw5bafihp7y33vsjqkh4wfzf"))))
+    (build-system gnu-build-system)
+    (arguments
+     (list
+      #:tests? #f   ; no check target
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'install 'install-xsession
+            (lambda* (#:key outputs #:allow-other-keys)
+              (let* ((out (assoc-ref outputs "out"))
+                     (xsessions (string-append out "/share/xsessions")))
+                (mkdir-p xsessions)
+                (call-with-output-file
+                    (string-append xsessions "/jwm.desktop")
+                  (lambda (port)
+                    (format port "~
+                     [Desktop Entry]~@
+                     Name=jwm~@
+                     Comment=Joe's Window Manager~@
+                     Exec=~a/bin/jwm~@
+                     Type=XSession~%" out)))))))))
+    (native-inputs (list pkg-config))
+    (inputs
+     (list cairo
+           libjpeg-turbo
+           libpng
+           librsvg
+           libxext
+           libxinerama
+           libxmu
+           libxpm
+           libxrender
+           libxt
+           pango))
+    (home-page "http://joewing.net/projects/jwm")
+    (synopsis "Joe's Window Manager")
+    (description
+     "JWM is a light-weight window manager for the X11 Window System.  it is
+written in C and uses only Xlib at a minimum.  Because of its small footprint,
+it makes a good window manager for older computers and less powerful systems,
+such as the Raspberry Pi, though it is perfectly capable of running on modern
+systems.")
+    (license license:expat)))
+
 (define-public devour
   (package
     (name "devour")