gnu: rubber: Update to 1.6.0.

* gnu/packages/tex.scm (rubber): Update to 1.6.0.
[source]: Switch to GitLab.
[build-system]: Use PYPROJECT-BUILD-SYSTEM.
[arguments]<#:tests?>: Activate tests.
<#:phases>: Build PDF documentation.
[native-inputs]: Add TEXLIVE-TEXINFO and TEXLIVE-UPDMAP.CFG.
[home-page]: Switch to GitLab.
[license]: Use GPL3+.

gnu/packages/tex.scm

@@ -53,6 +53,7 @@ (define-module (gnu packages tex)
   #:use-module (guix build-system copy)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system perl)
+  #:use-module (guix build-system pyproject)
   #:use-module (guix build-system python)
   #:use-module (guix build-system qt)
   #:use-module (guix build-system trivial)
@@ -56964,31 +56965,34 @@ (define-deprecated-package biber texlive-biber)
 (define-public rubber
   (package
     (name "rubber")
-    (version "1.5.1")
+    (version "1.6.0")
     (source (origin
-              (method url-fetch)
-              (uri (list (string-append "https://launchpad.net/rubber/trunk/"
-                                        version "/+download/rubber-"
-                                        version ".tar.gz")
-                         (string-append "http://ebeffara.free.fr/pub/rubber-"
-                                        version ".tar.gz")))
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://gitlab.com/latex-rubber/rubber/")
+                    (commit version)))
+              (file-name (git-file-name name version))
               (sha256
                (base32
-                "178dmrp0mza5gqjiqgk6dqs0c10s0c517pk6k9pjbam86vf47a1p"))))
-    (build-system python-build-system)
+                "0kndj42f87042x44p4jqwcf44bhpvhfqi2ilhh8sl09px2rm0qzl"))))
+    (build-system pyproject-build-system)
     (arguments
-     '(#:tests? #f ; no `check' target
-       #:phases
-       (modify-phases %standard-phases
-         (delete 'build)
-         (replace 'install
-           (lambda* (#:key outputs #:allow-other-keys)
-             ;; texlive is required to build the PDF documentation; do not
-             ;; build it.
-             (invoke "python" "setup.py" "build" "--pdf=False" "install"
-                     (string-append "--prefix=" (assoc-ref outputs "out"))))))))
-    (native-inputs (list texinfo))
-    (home-page "https://launchpad.net/rubber")
+     (list
+      #:tests? #true
+      #:phases
+      #~(modify-phases %standard-phases
+          (delete 'build)
+          ;; setup.py script does not support one of the Python build
+          ;; system's default flags, "--single-version-externally-managed".
+          (replace 'install
+            (lambda _
+              (invoke "python" "setup.py" "install"
+                      (string-append "--prefix=" #$output)
+                      "--root=/"))))))
+    (native-inputs
+     (list texinfo (texlive-updmap.cfg (list texlive-texinfo))))
+    (inputs (list python-wrapper))
+    (home-page "https://gitlab.com/latex-rubber/rubber/")
     (synopsis "Wrapper for LaTeX and friends")
     (description
      "Rubber is a program whose purpose is to handle all tasks related to the
@@ -56997,7 +57001,7 @@ (define-public rubber
 to manage bibliographic references.  Automatic execution of dvips to produce
 PostScript documents is also included, as well as usage of pdfLaTeX to produce
 PDF documents.")
-    (license license:gpl2+)))
+    (license license:gpl3+)))
 
 (define-public texmaker
   (package