gnu: Add nerd-dictation.

* gnu/packages/machine-learning.scm (nerd-dictation): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/machine-learning.scm

@@ -3602,3 +3602,37 @@ simple speech recognition.")
                  "from .vosk_cffi import ffi, lib")
                 (("_c\\.")
                  "lib.")))))))))
+
+(define-public nerd-dictation
+  (let* ((commit "53ab129a5ee0f8b5df284e8cf2229219b732c59e")
+         (revision "0"))
+    (package
+      (name "nerd-dictation")
+      (version (git-version "0" revision commit))
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/ideasman42/nerd-dictation")
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32 "184qijiva1h1x00dzicik0yzgh78pq2lqr5fkgicgp26mkarlyhc"))))
+      (build-system python-build-system)
+      (arguments
+       '(#:phases
+         (modify-phases %standard-phases
+           (add-after 'unpack 'chdir
+             (lambda _ (chdir "package/python"))))))
+      (propagated-inputs (list python-vosk))
+      (inputs (list pulseaudio xdotool))
+      (home-page "https://github.com/ideasman42/nerd-dictation")
+      (synopsis "Offline speech-to-text for desktop Linux")
+      (description "\
+This package provides simple access speech to text for using in
+Linux without being tied to a desktop environment, using the @code{vosk-api}.
+The user configuration lets you manipulate text using Python string
+operations.  It has zero overhead, as this relies on manual activation and
+there are no background processes.  Dictation is accessed manually with
+@code{nerd-dictation begin} and @code{nerd-dictation end} commands.")
+      (license license:gpl3+))))