gnu: Add texlive-latex-mr.

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

gnu/packages/tex.scm

@@ -16505,6 +16505,29 @@ can interact with LaTeX.mk so that the latter automatically invokes
 @end itemize")
     (license license:gpl3+)))
 
+(define-public texlive-latex-mr
+  (package
+    (name "texlive-latex-mr")
+    (version (number->string %texlive-revision))
+    (source (texlive-origin
+             name version
+             (list "doc/latex/latex-mr/")
+             (base32
+              "1zd948d9y63js7980g2bvxpf67hshh2xa3n2ihbzwhpw6l9cbh1w")))
+    (outputs '("out" "doc"))
+    (build-system texlive-build-system)
+    (home-page "https://ctan.org/pkg/latex-mr")
+    (synopsis
+     "Practical guide to LaTeX and Polyglossia for Marathi and other Indian
+languages")
+    (description
+     "This document aims to introduce LaTeX and Polyglossia for Indian languages.
+Though the document often discusses the language Marathi, the discussion
+applies to other India languages also.  We assume that the user of this
+document knows basic (La)TeX or has, at least, tried her hand on it.  This
+document is not very suitable for first time users.")
+    (license license:lppl1.3+)))
+
 (define-public texlive-liftarm
   (package
     (name "texlive-liftarm")