gnu: Add texlive-latex-textpos.

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

gnu/packages/tex.scm

@@ -8851,6 +8851,30 @@ (define-public texlive-translator
 automatically translate more than a few words.")
     (license (list license:lppl license:gpl1+))))
 
+(define-public texlive-latex-textpos
+  (package
+    (inherit (simple-texlive-package
+              "texlive-latex-textpos"
+              (list "doc/latex/textpos/"
+                    "tex/latex/textpos/")
+              (base32
+               "1g208dx853xg7g72jggkh13934r49yypksvalm5pk6snh0s0k86c")
+              #:trivial? #t))
+    (build-system texlive-build-system)
+    (home-page "https://ctan.org/pkg/textpos")
+    (synopsis "Absolute positioning of text on the LaTeX page")
+    (description
+     "This package facilitates placing boxes at absolute positions on the
+LaTeX page.  There are several reasons why this might be useful, but the main
+one (or at least my motivating one) is to help produce a large-format
+conference poster.
+
+This package provides a single environment, plus a starred variant, which
+contains the text (or graphics, or table, or whatever) which is to be placed
+on the page, and which specifies where it is to be placed.  The environment is
+accompanied by various configuration commands.")
+    (license license:lppl)))
+
 (define-public bibtool
   (package
     (name "bibtool")