gnu: Add mecab.

* gnu/packages/language.scm (mecab): New variable.
* gnu/packages/patches/mecab-variable-param.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu/packages/language.scm

@@ -979,55 +979,3 @@ fi")))))))
 collaboration between the Kyoto university and Nippon Telegraph and Telephone
 Corporation.  The engine is independent of any language, dictionary or corpus.")
     (license (list license:gpl2+ license:lgpl2.1+ license:bsd-3))))
-
-(define-public mecab-ipadic
-  (package
-    (name "mecab-ipadic")
-    (version "2.7.0")
-    (source (package-source mecab))
-    (build-system gnu-build-system)
-    (arguments
-     `(#:configure-flags
-       (list (string-append "--with-dicdir=" (assoc-ref %outputs "out")
-                            "/lib/mecab/dic")
-             "--with-charset=utf8")
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'unpack 'chdir
-           (lambda _
-             (chdir "mecab-ipadic")))
-         (add-before 'configure 'set-mecab-dir
-           (lambda* (#:key outputs #:allow-other-keys)
-             (setenv "MECAB_DICDIR" (string-append (assoc-ref outputs "out")
-                                                   "/lib/mecab/dic")))))))
-    (native-inputs (list mecab)); for mecab-config
-    (home-page "https://taku910.github.io/mecab")
-    (synopsis "Dictionary data for MeCab")
-    (description "This package contains dictionnary data derived from
-ipadic for use with MeCab.")
-    (license (license:non-copyleft "mecab-ipadic/COPYING"))))
-
-(define-public mecab-unidic
-  (package
-    (name "mecab-unidic")
-    (version "3.1.0")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://clrd.ninjal.ac.jp/unidic_archive/cwj/"
-                                  version "/unidic-cwj-" version ".zip"))
-              (sha256
-               (base32
-                "1z132p2q3bgchiw529j2d7dari21kn0fhkgrj3vcl0ncg2m521il"))))
-    (build-system copy-build-system)
-    (arguments
-     `(#:install-plan
-       '(("." "lib/mecab/dic"
-          #:include-regexp ("\\.bin$" "\\.def$" "\\.dic$" "dicrc")))))
-    (native-inputs (list unzip))
-    (home-page "https://clrd.ninjal.ac.jp/unidic/en/")
-    (synopsis "Dictionary data for MeCab")
-    (description "UniDic for morphological analysis is a dictionary for
-analysis with the morphological analyser MeCab, where the short units exported
-from the database are used as entries (heading terms).")
-    ;; triple-licensed (at the user’s choice)
-    (license (list license:gpl2+ license:lgpl2.1 license:bsd-3))))