gnu: python-pyside: Update to 5.12.6.

* gnu/packages/qt.scm (python-shiboken-2): Update to 5.12.6.
[source]: Download tarball release instead of git repository.
[arguments]: Add phase to make files writable and update timestamps.
(python-pyside-2): Inherit version and source from PYTHON-SHIBOKEN-2.
[native-inputs]: Remove LIBCXX-6.  Rename "python-wrapper" input to "python".
Change from CMAKE to CMAKE-MINIMAL.
[arguments]: Remove libcxx substitution.  Add "-DPYTHON_EXECUTABLE" in
 #:configure-flags.
(python-pyside-2-tools)[native-inputs]: Add PYTHON-WRAPPER.
[arguments]: Set "-DPYTHON_EXECUTABLE" in #:configure-flags.  Add phase
'go-to-source-dir'.

gnu/packages/qt.scm

@@ -2515,25 +2515,18 @@ color-related widgets.")
       (license license:lgpl3+))))
 
 (define-public python-shiboken-2
-  (let ((revision "1")
-        ;; Pinned to branches with support for qt 5.11.3
-        (commit "4018787a3cc01d632fdca7891ac8aa9487110c26"))
   (package
     (name "python-shiboken-2")
-      (version (git-version "v5.11.3" revision commit))
-      (source
-       (origin
-         (method git-fetch)
-         (uri (git-reference
-               ;; The latest versions of Shiboken live in the pyside repo.
-               ;; There is another standalone repo only for Shiboken
-               ;; but it is outdated
-               (url "https://code.qt.io/pyside/pyside-setup")
-               (commit commit)))
-         (file-name (git-file-name name version))
+    (version "5.12.6")
+    (source (origin
+              (method url-fetch)
+              (uri (string-append "https://download.qt.io/official_releases"
+                                  "/QtForPython/pyside2/PySide2-" version
+                                  "-src/pyside-setup-everywhere-src-"
+                                  version ".tar.xz"))
               (sha256
                (base32
-           "0g8jacm2iqd7lw2m7f1dp1nnrsk38bl3m8pihm8zz9gxs8d31sf5"))))
+                "1n45l6xxyxs6cfp2l4rp8qs1c2fyfwyrdxa4qcpwfsqsi51rydsk"))))
     (build-system cmake-build-system)
     (inputs
      `(("clang-toolchain" ,clang-toolchain-6)
@@ -2550,6 +2543,18 @@ color-related widgets.")
        (modify-phases %standard-phases
          (add-after 'unpack 'use-shiboken-dir-only
            (lambda _ (chdir "sources/shiboken2") #t))
+         (add-before 'configure 'make-files-writable-and-update-timestamps
+           (lambda _
+             ;; The build scripts need to modify some files in
+             ;; the read-only source directory, and also attempts
+             ;; to create Zip files which fails because the Zip
+             ;; format does not support timestamps before 1980.
+             (let ((circa-1980 (* 10 366 24 60 60)))
+               (for-each (lambda (file)
+                           (make-file-writable file)
+                           (utime file circa-1980 circa-1980))
+                         (find-files ".")))
+             #t))
          (add-before 'configure 'set-build-env
            (lambda* (#:key inputs #:allow-other-keys)
              (let ((llvm (assoc-ref inputs "clang-toolchain")))
@@ -2566,29 +2571,16 @@ color-related widgets.")
       ;; Examples are BSD-3.
       license:gpl3
       license:lgpl3
-        license:bsd-3)))))
+      license:bsd-3))))
 
 (define-public python-pyside-2
-  (let ((revision "1")
-        ;; Pinned to branches with support for qt 5.11.3
-        (commit "4018787a3cc01d632fdca7891ac8aa9487110c26"))
   (package
     (name "python-pyside-2")
-      (version (git-version "v5.11.3" revision commit))
-      (source
-       (origin
-         (method git-fetch)
-         (uri (git-reference
-               (url "https://code.qt.io/pyside/pyside-setup")
-               (commit commit)))
-         (file-name (git-file-name name version))
-         (sha256
-          (base32
-           "0g8jacm2iqd7lw2m7f1dp1nnrsk38bl3m8pihm8zz9gxs8d31sf5"))))
+    (version (package-version python-shiboken-2))
+    (source (package-source python-shiboken-2))
     (build-system cmake-build-system)
     (inputs
-       `(("libcxx" ,libcxx-6)
-         ("libxml2" ,libxml2)
+     `(("libxml2" ,libxml2)
        ("libxslt" ,libxslt)
        ("clang-toolchain" ,clang-toolchain-6)
        ("qtbase" ,qtbase)
@@ -2606,27 +2598,27 @@ color-related widgets.")
        ("qtx11extras" ,qtx11extras)
        ("qtxmlpatterns" ,qtxmlpatterns)))
     (native-inputs
-       `(("cmake" ,cmake)
+     `(("cmake" ,cmake-minimal)
        ("python-shiboken-2" ,python-shiboken-2)
-         ("python-wrapper" ,python-wrapper)
+       ("python" ,python-wrapper)
        ("qttools" ,qttools)
        ("which" ,which)))
     (arguments
      `(#:tests? #f
        ;; FIXME: Building tests fail.
-         #:configure-flags '("-DBUILD_TESTS=FALSE")
+       #:configure-flags
+       (list "-DBUILD_TESTS=FALSE"
+             (string-append "-DPYTHON_EXECUTABLE="
+                            (assoc-ref %build-inputs "python")
+                            "/bin/python"))
        #:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'go-to-source-dir
            (lambda _ (chdir "sources/pyside2") #t))
          (add-before 'configure 'set-clang-dir
            (lambda* (#:key inputs #:allow-other-keys)
-               (let ((clang (assoc-ref inputs "clang-toolchain"))
-                     (libcxx (assoc-ref inputs "libcxx")))
+             (let ((clang (assoc-ref inputs "clang-toolchain")))
                (setenv "CLANG_INSTALL_DIR" clang)
-                 (substitute* "cmake/Macros/PySideModules.cmake"
-                   (("--include-paths=")
-                    (string-append "--include-paths=" libcxx "/include/c++/v1:")))
                #t))))))
     (home-page "https://wiki.qt.io/Qt_for_Python")
     (synopsis
@@ -2647,36 +2639,33 @@ generate Python bindings for your C or C++ code.")
               ;; approved by the KDE Free Qt Foundation.
               ;; Thus, it is currently v2 or v3, but no "+".
               license:gpl3
-                license:gpl2)))))
+              license:gpl2))))
 
 (define-public python-pyside-2-tools
-  (let ((revision "1")
-        ;; Pinned to branches with support for qt 5.11.3
-        (commit "f1b775537e7fbd718516749583b2abf1cb6adbce"))
   (package
     (name "python-pyside-2-tools")
-      (version (git-version "v5.11.2" revision commit))
-      (source
-       (origin
-         (method git-fetch)
-         (uri (git-reference
-               (url "https://code.qt.io/pyside/pyside-tools")
-               (commit commit)))
-         (file-name (git-file-name name version))
-         (sha256
-          (base32
-           "1w2g5afvww9r89wmdm9jx8sz67x4bzy9difkh72n4c73ya1n91ry"))))
+    (version (package-version python-shiboken-2))
+    (source (package-source python-shiboken-2))
     (build-system cmake-build-system)
     (inputs
      `(("python-pyside-2" ,python-pyside-2)
        ("python-shiboken-2" ,python-shiboken-2)
        ("qtbase" ,qtbase)))
+    (native-inputs
+     `(("python" ,python-wrapper)))
     (arguments
      `(#:tests? #f
-         #:configure-flags '("-DBUILD_TESTS=off")))
+       #:configure-flags
+       (list "-DBUILD_TESTS=off"
+             (string-append "-DPYTHON_EXECUTABLE="
+                            (assoc-ref %build-inputs "python")
+                            "/bin/python"))
+       #:phases (modify-phases %standard-phases
+                  (add-after 'unpack 'go-to-source-dir
+                    (lambda _ (chdir "sources/pyside2-tools") #t)))))
     (home-page "https://wiki.qt.io/Qt_for_Python")
     (synopsis
      "Contains command line tools for PySide2")
     (description
      "Contains lupdate, rcc and uic tools for PySide2")
-      (license license:gpl2))))
+    (license license:gpl2)))