gnu: texlive-latex-pdfx: Use simple-texlive-package.

* gnu/packages/tex.scm (texlive-latex-pdfx): Implement with
simple-texlive-package.
[native-inputs]: Remove.
[propagated-inputs]: Replace texlive-generic-pdftex with texlive-pdftex.

gnu/packages/tex.scm

@@ -7140,57 +7140,42 @@ (define-public texlive-latex-xmpincl
     (license license:gpl3+)))
 
 (define-public texlive-latex-pdfx
-  (package
-    (name "texlive-latex-pdfx")
-    (version (number->string %texlive-revision))
-    (source
-     (origin
-       (method svn-fetch)
-       (uri (texlive-ref "latex" "pdfx"))
-       (file-name (string-append name "-" version "-checkout"))
-       (sha256
+  (let ((template (simple-texlive-package
+                   "texlive-latex-pdfx"
+                   (list "/doc/latex/pdfx/"
+                         "/source/latex/pdfx/"
+                         "/tex/latex/pdfx/")
                    (base32
-         "18294h0cr05fs424m3x6aq24z5hf5zmiflalkj4kvpmsyyqqsj74"))))
-    (build-system texlive-build-system)
+                    "1z4j4d92k2fjmf8jfap4zn7ij97d9rz2jcs9aslcac07ag4x5bdp"))))
+    (package
+      (inherit template)
       (arguments
-     '(#:tex-directory "latex/pdfx"
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'fix-encoding
+       (substitute-keyword-arguments (package-arguments template)
+         ((#:tex-directory _ #t)
+          "latex/pdfx")
+         ((#:phases phases)
+          `(modify-phases ,phases
+             (add-after 'unpack 'delete-generated-file
+               (lambda _
+                 ;; Generate this file from sources
+                 (delete-file "tex/latex/pdfx/pdfx.sty")
+                 #t))
+             (add-after 'delete-generated-file 'chdir
+               (lambda _ (chdir "source/latex/pdfx") #t))
+             (add-after 'chdir 'fix-encoding
                (lambda _
                  (substitute* "pdfx.dtx"
                    (("    .+umaczy") "umaczy"))
-             #t))
-         (add-before 'install 'install-tex-files
-           (lambda* (#:key inputs outputs #:allow-other-keys)
-             (let ((target (string-append (assoc-ref outputs "out")
-                                          "/share/texmf-dist/tex/latex/pdfx")))
-               (mkdir-p target)
-               (copy-recursively (assoc-ref inputs "texlive-tex-pdfx") target)
-               ;; Install the generated version in the "install" phase.
-               (delete-file (string-append target "/pdfx.sty"))
                  #t))))))
       (propagated-inputs
-     `(("texlive-generic-pdftex" ,texlive-generic-pdftex)))
-    (native-inputs
-     `(("texlive-tex-pdfx"
-        ,(origin
-           (method svn-fetch)
-           (uri (svn-reference
-                 (url (string-append "svn://www.tug.org/texlive/tags/"
-                                     %texlive-tag "/Master/texmf-dist/"
-                                     "/tex/latex/pdfx"))
-                 (revision %texlive-revision)))
-           (file-name (string-append "texlive-tex-latex-pdfx-" version "-checkout"))
-           (sha256
-            (base32
-             "171ffvpkj2fab4ljcxv3l6l5c8ga8zavdhmhfq07id8zyyr619ip"))))))
+       `(("texlive-pdftex" ,texlive-pdftex)))
       (home-page "https://www.ctan.org/pkg/pdfx")
       (synopsis "PDF/X and PDF/A support for pdfTeX, LuaTeX and XeTeX")
       (description
        "This package helps LaTeX users to create PDF/X, PDF/A and other
 standards-compliant PDF documents with pdfTeX, LuaTeX and XeTeX.")
-    (license license:lppl1.2+)))
+      (license license:lppl1.2+))))
+
 
 (define-public texlive-ydoc
   (let ((template (simple-texlive-package