gnu: inkscape: Build with lib2geom 1.2.

* gnu/packages/graphics.scm (lib2geom-1.2): New variable.
* gnu/packages/inkscape.scm (inkscape)[arguments]: Enable previously failing
test.
[inputs]: Replace "lib2geom" with LIB2GEOM-1.2.

gnu/packages/graphics.scm

@@ -849,6 +849,20 @@ (define-public lib2geom
     ;; https://gitlab.com/inkscape/inkscape/issues/784).
     (license license:gpl3+)))
 
+(define-public lib2geom-1.2
+  (package
+    (inherit lib2geom)
+    (version "1.2")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://gitlab.com/inkscape/lib2geom")
+                    (commit version)))
+              (file-name (git-file-name "lib2geom" version))
+              (sha256
+               (base32
+                "0dq981g894hmvhd6rmfl1w32mksg9hpvpjs1qvfxrnz87rhkknj8"))))))
+
 (define-public python-booleanoperations
   (package
     (name "python-booleanoperations")

gnu/packages/inkscape.scm

@@ -259,16 +259,6 @@ (define-public inkscape
      (substitute-keyword-arguments (package-arguments inkscape/stable)
        ((#:phases phases)
         `(modify-phases ,phases
-           (add-after 'unpack 'disable-problematic-tests
-             ;; The UnionOutside and UnionOutsideSwap tests fail, comparing
-             ;; e.g. the result "M 0 1.5 V 0 H 2 V 2 H 0.5 V 2.5 H 0 V 2 V 1.5 H
-             ;; 0.5 V 2 z" to the expected string "M 0 0 V 1.5 V 2 V 2.5 H 0.5 V
-             ;; 2 H 2 V 0 z" (see:
-             ;; https://gitlab.com/inkscape/inkscape/-/issues/3689).
-             (lambda _
-               (substitute* "testfiles/src/path-boolop-test.cpp"
-                 (("PathBoolopTest, UnionOutside(Swap)?.*" all)
-                  (string-append all "    GTEST_SKIP();\n")))))
            (replace 'wrap-program
              ;; Ensure Python is available at runtime.
              (lambda* (#:key outputs #:allow-other-keys)
@@ -281,6 +271,7 @@ (define-public inkscape
                    `("GDK_PIXBUF_MODULE_FILE" =
                      (,(getenv "GDK_PIXBUF_MODULE_FILE")))))))))))
     (inputs (modify-inputs (package-inputs inkscape/stable)
+              (replace "lib2geom" lib2geom-1.2)
               (append bash-minimal
                       librsvg)))        ;for the pixbuf loader
     (properties (alist-delete 'hidden? (package-properties inkscape/stable)))))