gnu: Add texlive-dpfloat.

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

gnu/packages/tex.scm

@@ -79476,6 +79476,27 @@ simple way to extend this functionality to other items (options or counters,
 for instance).  The DoX package is designed to circumvent this limitation.")
     (license license:lppl1.3+)))
 
+(define-public texlive-dpfloat
+  (package
+    (name "texlive-dpfloat")
+    (version (number->string %texlive-revision))
+    (source (texlive-origin
+             name version
+             (list "doc/latex/dpfloat/" "tex/latex/dpfloat/")
+             (base32
+              "1xkdnjc3b65kq558yyb2yj1xb0r1cqfyxfgsvmxj79p6naxw7jnc")))
+    (outputs '("out" "doc"))
+    (build-system texlive-build-system)
+    (home-page "https://ctan.org/pkg/dpfloat")
+    (synopsis "Support for double-page floats")
+    (description
+     "This package provides @code{fullpage} and @code{leftfullpage} environments,
+that may be used inside a @code{figure}, @code{table}, or other float
+environment.  If the first of a 2-page spread uses a @code{leftfullpage}
+environment, the float will only be typeset on an even-numbered page, and the
+two floats will appear side-by-side in a two-sided document.")
+    (license license:lppl)))
+
 ;;;
 ;;; Avoid adding new packages to the end of this file. To reduce the chances
 ;;; of a merge conflict, place them above by existing packages with similar