gnu: Add texlive-grffile.

* gnu/packages/tex.scm (texlive-grffile): New variable.

gnu/packages/tex.scm

@@ -3561,6 +3561,34 @@ the l3kernel and xparse bundles from the LaTeX 3 development team.")
 
 (define-deprecated-package texlive-latex-fontspec texlive-fontspec)
 
+(define-public texlive-grffile
+  (let ((template (simple-texlive-package
+                   "texlive-grffile"
+                   (list "/doc/latex/grffile/README.md"
+                         "/source/latex/grffile/grffile.dtx")
+                   (base32
+                    "1ib2n4d52faipvxdvdh4ar1p5j997h7cza26sfyd8z3qdf0naqgx"))))
+    (package
+      (inherit template)
+      (arguments
+       (substitute-keyword-arguments (package-arguments template)
+         ((#:tex-directory _ #t)
+          "latex/grffile")
+         ((#:build-targets _ #t)
+          '(list "grffile.dtx"))
+         ((#:phases phases)
+          `(modify-phases ,phases
+             (add-after 'unpack 'chdir
+               (lambda _ (chdir "source/latex/grffile/")))))))
+      (home-page "https://www.ctan.org/pkg/grffile")
+      (synopsis "Extended file name support for graphics (legacy package)")
+      (description
+       "The original grffile package extended the file name processing of the
+@code{graphics} package to support a larger range of file names.  The base
+LaTeX code now supports multiple dots and spaces, and this package by default
+is a stub that just loads @code{graphicx}.")
+      (license license:lppl1.3c+))))
+
 (define-public texlive-l3build
   (let ((template (simple-texlive-package
                    "texlive-l3build"