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-rw-r--r--gnu/packages/tex.scm1
1 files changed, 1 insertions, 0 deletions
diff --git a/gnu/packages/tex.scm b/gnu/packages/tex.scm
index b47baec349..8ff396c50e 100644
--- a/gnu/packages/tex.scm
+++ b/gnu/packages/tex.scm
@@ -766,6 +766,7 @@ of user-specified directories similar to how shells look up executables.")
(string-append "File.join(\"" ptex "\"")))
(invoke "ruby" "generate-ptex-patterns.rb"))))))))
(native-inputs
+ ;; TODO: Update to ruby@3 on next rebuild-cycle.
(list ruby-2.7
ruby-hydra-minimal/pinned
;; Build phase requires "docstrip.tex" from TEXLIVE-LATEX.