gnu: ghostscript: Update to 9.23.

* gnu/packages/ghostscript.scm (ghostscript): Update to 9.23.
[source](snippet): Adjust to removed LCMS2 library.
[arguments]: Remove FIX-DOC-DIR-PHASE.  Prevent docdir compatibility symlink.
[inputs]: Remove LCMS2.
* gnu/packages/patches/ghostscript-no-header-id.patch: Adjust context.

gnu/packages/ghostscript.scm

@@ -132,7 +132,7 @@ printing, and psresize, for adjusting page sizes.")
 (define-public ghostscript
   (package
     (name "ghostscript")
-    (version "9.22")
+    (version "9.23")
     (source
       (origin
         (method url-fetch)
@@ -142,7 +142,7 @@ printing, and psresize, for adjusting page sizes.")
                             "/ghostscript-" version ".tar.xz"))
         (sha256
          (base32
-          "1fyi4yvdj39bjgs10klr31cda1fbx1ar7a7b7yz7v68gykk65y61"))
+          "1ng8d9fm5lza7k1f7ybc791275c07z5hcmpkrl2i226nshkxrkhz"))
         (patches (search-patches "ghostscript-runpath.patch"
                                  "ghostscript-no-header-creationdate.patch"
                                  "ghostscript-no-header-id.patch"
@@ -152,10 +152,10 @@ printing, and psresize, for adjusting page sizes.")
           ;; Remove bundled libraries. The bundled OpenJPEG is a patched fork so
           ;; we leave it, at least for now.
           ;; TODO Try unbundling ijs, which is developed alongside Ghostscript.
+          ;; Likewise for the thread-safe lcms2 fork called "lcms2art".
          '(begin
             (for-each delete-file-recursively '("freetype" "jbig2dec" "jpeg"
-                                                "lcms2" "libpng"
-                                                "tiff" "zlib"))
+                                                "libpng" "tiff" "zlib"))
             #t))))
     (build-system gnu-build-system)
     (outputs '("out" "doc"))                  ;19 MiB of HTML/PS doc + examples
@@ -180,13 +180,6 @@ printing, and psresize, for adjusting page sizes.")
                    '()))
        #:phases
        (modify-phases %standard-phases
-        (add-after 'unpack 'fix-doc-dir
-          (lambda _
-            ;; Honor --docdir.
-            (substitute* "Makefile.in"
-              (("^docdir=.*$") "docdir = @docdir@\n")
-              (("^exdir=.*$") "exdir = $(docdir)/examples\n"))
-            #t))
         (add-after 'configure 'remove-doc-reference
           (lambda _
             ;; Don't retain a reference to the 'doc' output in 'gs'.
@@ -195,6 +188,10 @@ printing, and psresize, for adjusting page sizes.")
             (substitute* "base/gscdef.c"
               (("GS_DOCDIR")
                "\"~/.guix-profile/share/doc/ghostscript\""))
+            ;; The docdir default changed in 9.23 and a compatibility
+            ;; symlink was added from datadir->docdir.  Remove it.
+            (substitute* "base/unixinst.mak"
+              (("ln -s \\$\\(DESTDIR\\)\\$\\(docdir\\).*") ""))
             #t))
          (add-after 'configure 'patch-config-files
            (lambda _
@@ -234,13 +231,11 @@ printing, and psresize, for adjusting page sizes.")
        ;; these libraries.
        ,@(if (%current-target-system)
              `(("zlib/native" ,zlib)
-               ("libjpeg/native" ,libjpeg)
-               ("lcms2/native" ,lcms))
+               ("libjpeg/native" ,libjpeg))
              '())))
     (inputs
      `(("freetype" ,freetype)
        ("jbig2dec" ,jbig2dec)
-       ("lcms2" ,lcms)
        ("libjpeg" ,libjpeg)
        ("libpaper" ,libpaper)
        ("libpng" ,libpng)

gnu/packages/patches/ghostscript-no-header-id.patch

@@ -9,7 +9,7 @@ See: https://bugs.ghostscript.com/show_bug.cgi?id=698208
 diff -ur orig/gnu-ghostscript-9.14.0/devices/vector/gdevpdf.c gnu-ghostscript-9.14.0/devices/vector/gdevpdf.c
 --- orig/gnu-ghostscript-9.14.0/devices/vector/gdevpdf.c	2017-07-09 23:30:28.960479189 +0200
 +++ gnu-ghostscript-9.14.0/devices/vector/gdevpdf.c	2017-07-09 23:34:34.306524488 +0200
-@@ -1580,8 +1580,11 @@
+@@ -1785,8 +1785,11 @@
       * +1 for the linearisation dict and +1 for the primary hint stream.
       */
      linear_params->FirsttrailerOffset = gp_ftell_64(linear_params->Lin_File.file);
@@ -23,10 +23,10 @@ diff -ur orig/gnu-ghostscript-9.14.0/devices/vector/gdevpdf.c gnu-ghostscript-9.
      fwrite(LDict, strlen(LDict), 1, linear_params->Lin_File.file);
  
      /* Write document catalog (Part 4) */
-@@ -2102,8 +2105,11 @@
-      * in the missing values.
-      */
-     code = gp_fseek_64(linear_params->sfile, linear_params->FirsttrailerOffset, SEEK_SET);
+@@ -2321,8 +2324,11 @@
+     if (code != 0)
+         return_error(gs_error_ioerror);
+ 
 -    gs_sprintf(LDict, "\ntrailer\n<</Size %ld/Info %d 0 R/Root %d 0 R/ID[%s%s]/Prev %"PRId64">>\nstartxref\r\n0\n%%%%EOF\n",
 -        linear_params->LastResource + 3, pdev->ResourceUsage[linear_params->Info_id].NewObjectNumber, pdev->ResourceUsage[linear_params->Catalog_id].NewObjectNumber, fileID, fileID, mainxref);
 +    gs_sprintf(LDict, "\ntrailer\n<</Size %ld/Info %d 0 R/Root %d 0 R",
@@ -37,7 +37,7 @@ diff -ur orig/gnu-ghostscript-9.14.0/devices/vector/gdevpdf.c gnu-ghostscript-9.
      fwrite(LDict, strlen(LDict), 1, linear_params->sfile);
  
      code = gp_fseek_64(linear_params->sfile, pdev->ResourceUsage[HintStreamObj].LinearisedOffset, SEEK_SET);
-@@ -2674,10 +2680,12 @@
+@@ -3016,10 +3022,12 @@
              stream_puts(s, "trailer\n");
              pprintld3(s, "<< /Size %ld /Root %ld 0 R /Info %ld 0 R\n",
                    pdev->next_id, Catalog_id, Info_id);
@@ -54,4 +54,3 @@ diff -ur orig/gnu-ghostscript-9.14.0/devices/vector/gdevpdf.c gnu-ghostscript-9.
              if (pdev->OwnerPassword.size > 0) {
                  pprintld1(s, "/Encrypt %ld 0 R ", Encrypt_id);
              }
-Nur in gnu-ghostscript-9.14.0/devices/vector: gdevpdf.c.orig.