[bug#45965] [PATCH] gnu: Add fzf.

[EuAndreh]

* gnu/packages/terminals.scm (fzf): New variable, which inherits
  from the existing go-github-com-junegunn-fzf package, but also
  install other binary, and completion for direct usage.
---
Done as discussed.

 gnu/packages/terminals.scm | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/gnu/packages/terminals.scm b/gnu/packages/terminals.scm
index a9897ec623..7ccba97968 100644
--- a/gnu/packages/terminals.scm
+++ b/gnu/packages/terminals.scm
@@ -824,6 +824,43 @@ programmer to write text-based user interfaces.")
 usable with any list--including files, command history, processes and more.")
     (license license:expat)))
 
+(define-public fzf
+  (package
+    (inherit go-github-com-junegunn-fzf)
+    (name "fzf")
+    (arguments
+     `(,@(ensure-keyword-arguments
+          (package-arguments go-github-com-junegunn-fzf)
+          `(#:phases
+            (modify-phases %standard-phases
+              (add-after 'install 'copy-binaries
+                (lambda* (#:key outputs #:allow-other-keys)
+                  (let ((out (assoc-ref outputs "out")))
+                    (with-directory-excursion "src/github.com/junegunn/fzf"
+                      (install-file "bin/fzf-tmux"
+                                    (string-append out "/bin"))))))
+              (add-after 'copy-binaries 'wrap-programs
+                (lambda* (#:key outputs inputs #:allow-other-keys)
+                  (let ((out (assoc-ref outputs "out"))
+                        (ncurses (assoc-ref inputs "ncurses")))
+                    (wrap-program (string-append out "/bin/fzf-tmux")
+                      `("PATH" ":" prefix (,(string-append ncurses 
"/bin")))))))
+              (add-after 'install 'install-completions
+                (lambda* (#:key outputs #:allow-other-keys)
+                  (let* ((out (assoc-ref outputs "out"))
+                         (bash-completion (string-append out 
"/etc/bash_completion.d"))
+                         (zsh-completion (string-append out 
"/share/zsh/site-functions")))
+                    (with-directory-excursion "src/github.com/junegunn/fzf"
+                      (mkdir-p bash-completion)
+                      (copy-file "shell/completion.bash"
+                                 (string-append bash-completion "/fzf"))
+                      (mkdir-p zsh-completion)
+                      (copy-file "shell/completion.zsh"
+                                 (string-append zsh-completion 
"/_fzf")))))))))))
+    (inputs
+     `(,@(package-inputs go-github-com-junegunn-fzf)
+       ("ncurses" ,ncurses)))))
+
 (define-public go-github.com-howeyc-gopass
   (let ((commit "bf9dde6d0d2c004a008c27aaee91170c786f6db8")
         (revision "0"))
-- 
2.30.0