guix: import LIEF from upstream (0.12.3)

Updates to version 0.12.3.
Retain our PPC64 patch.
Mention when we can drop our local definition.

contrib/guix/manifest.scm

@@ -208,35 +208,39 @@ chain for " target " development."))
   (package-with-extra-patches lief
     (search-our-patches "lief-fix-ppc64-nx-default.patch")))
 
-(define-public lief
+;; Our python-lief package can be removed once we are using
+;; guix 83bfdb409787cb2737e68b093a319b247b7858e6 or later.
+(define-public python-lief
   (package
-   (name "python-lief")
-   (version "0.12.1")
-   (source
-    (origin
-     (method git-fetch)
-     (uri (git-reference
-           (url "https://github.com/lief-project/LIEF.git")
-           (commit version)))
-     (file-name (git-file-name name version))
-     (sha256
-      (base32
-       "1xzbh3bxy4rw1yamnx68da1v5s56ay4g081cyamv67256g0qy2i1"))))
-   (build-system python-build-system)
-   (arguments
-    `(#:phases
-      (modify-phases %standard-phases
-        (add-after 'unpack 'parallel-jobs
-          ;; build with multiple cores
-          (lambda _
-            (substitute* "setup.py" (("self.parallel if self.parallel else 1") (number->string (parallel-job-count)))))))))
-   (native-inputs
-    `(("cmake" ,cmake)))
-   (home-page "https://github.com/lief-project/LIEF")
-   (synopsis "Library to Instrument Executable Formats")
-   (description "Python library to to provide a cross platform library which can
-parse, modify and abstract ELF, PE and MachO formats.")
-   (license license:asl2.0)))
+    (name "python-lief")
+    (version "0.12.3")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/lief-project/LIEF")
+                    (commit version)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "11i6hqmcjh56y554kqhl61698n9v66j2qk1c1g63mv2w07h2z661"))))
+    (build-system python-build-system)
+    (native-inputs (list cmake))
+    (arguments
+     (list
+      #:tests? #f                  ;needs network
+      #:phases #~(modify-phases %standard-phases
+                   (replace 'build
+                     (lambda _
+                       (invoke
+                        "python" "setup.py" "--sdk" "build"
+                        (string-append
+                         "-j" (number->string (parallel-job-count)))))))))
+    (home-page "https://github.com/lief-project/LIEF")
+    (synopsis "Library to instrument executable formats")
+    (description
+     "@code{python-lief} is a cross platform library which can parse, modify
+and abstract ELF, PE and MachO formats.")
+    (license license:asl2.0)))
 
 (define osslsigncode
   (package
@@ -596,7 +600,7 @@ inspecting signatures in Mach-O binaries.")
         ;; Git
         git-minimal
         ;; Tests
-        (fix-ppc64-nx-default lief))
+        (fix-ppc64-nx-default python-lief))
   (let ((target (getenv "HOST")))
     (cond ((string-suffix? "-mingw32" target)
            ;; Windows