gnu: Add texlive-luacas.

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

gnu/packages/tex.scm

@@ -16304,6 +16304,39 @@ (define-public texlive-luaaddplot
 pre-process data files generated by measuring devices with external scripts.")
     (license license:lppl1.3+)))
 
+(define-public texlive-luacas
+  (package
+    (name "texlive-luacas")
+    (version (number->string %texlive-revision))
+    (source (texlive-origin
+             name version
+             (list "doc/lualatex/luacas/"
+                   "tex/lualatex/luacas/_lib/"
+                   "tex/lualatex/luacas/algebra/"
+                   "tex/lualatex/luacas/calculus/"
+                   "tex/lualatex/luacas/core/binaryoperation/"
+                   "tex/lualatex/luacas/test/calculus/"
+                   "tex/lualatex/luacas/test/expressions/"
+                   "tex/lualatex/luacas/test/polynomials/"
+                   "tex/lualatex/luacas/test/rings/")
+             (base32
+              "03z33kphj85y5w0sdgrgsh1pajbxwjiiir0s972cjn3f8ns6xw9x")))
+    (outputs '("out" "doc"))
+    (build-system texlive-build-system)
+    (home-page "https://ctan.org/pkg/luacas")
+    (synopsis "Computer algebra system for users of LuaLaTeX")
+    (description
+     "This package provides a portable computer algebra system capable of
+symbolic computation, written entirely in Lua, designed for use in LuaLaTeX.
+Its features are: arbitrary-precision integer and rational arithmetic,
+factoring of univariate polynomials over the rationals and finite fields,
+number theoretic algorithms, symbolic differentiation and integration, and
+more.  The target audience for this package are mathematics students,
+instructors, and professionals who would like some ability to perform basic
+symbolic computations within LaTeX without the need for laborious and
+technical setup.")
+    (license license:lppl1.3c)))
+
 (define-public texlive-babel-czech
   (package
     (name "texlive-babel-czech")