gnu: Add fzf and un-packaged dependencies

* gnu/packages/golang.scm (go-github-com-mattn-go-runewidth): New variable.
* gnu/packages/golang.scm (go-github-com-mattn-go-shellwords): New variable.
* gnu/packages/shellutils.scm (fzf): New variable.

Signed-off-by: Collin J. Doering <collin@rekahsoft.ca>

gnu/packages/golang.scm

@@ -4263,3 +4263,49 @@ used by other processes.")
 Porter2 stemmer}.  It is written completely using finite state machines to do
 suffix comparison, rather than the string-based or tree-based approaches.")
       (license license:asl2.0))))
+
+(define-public go-github-com-mattn-go-runewidth
+  (package
+    (name "go-runewidth")
+    (version "0.0.4")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/mattn/go-runewidth.git")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "00b3ssm7wiqln3k54z2wcnxr3k3c7m1ybyhb9h8ixzbzspld0qzs"))))
+    (build-system go-build-system)
+    (arguments
+     '(#:import-path "github.com/mattn/go-runewidth"))
+    (synopsis "Provides functions to get fixed width of the character or string")
+    (description
+     "Provides functions to get fixed width of the character or string.")
+    (home-page "https://github.com/mattn/go-runewidth")
+    (license license:expat)))
+
+(define-public go-github-com-mattn-go-shellwords
+  (package
+    (name "go-shellwords")
+    (version "1.0.6")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/mattn/go-shellwords.git")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0s6rcswsr6k5dwcng4ck6xhz5xw6j20x1d24ngbbh9qfxxnw0j3j"))))
+    (build-system go-build-system)
+    (arguments
+     '(#:import-path "github.com/mattn/go-shellwords"
+       #:phases (modify-phases %standard-phases
+                  (delete 'check))))
+    (synopsis "Parse line as shell words")
+    (description
+     "Go library to parse a line as shell words.")
+    (home-page "https://github.com/mattn/go-shellwords")
+    (license license:expat)))

gnu/packages/shellutils.scm

@@ -126,6 +126,54 @@ all of the regexes given on the command line in order.")
     (home-page "https://github.com/rupa/z")
     (license license:expat)))
 
+(define-public fzf
+  (package
+    (name "fzf")
+    (version "0.18.0")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/junegunn/fzf.git")
+                    (commit version)))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0pwpr4fpw56yzzkcabzzgbgwraaxmp7xzzmap7w1xsrkbj7dl2xl"))))
+    (build-system go-build-system)
+    (native-inputs
+     `(("github.com/mattn/go-isatty" ,go-github-com-mattn-go-isatty)
+       ("github.com/mattn/go-runewidth" ,go-github-com-mattn-go-runewidth)
+       ("github.com/mattn/go-shellwords" ,go-github-com-mattn-go-shellwords)
+       ("golang.org/x/crypto/ssh/terminal" ,go-golang-org-x-crypto-ssh-terminal)
+       ("golang.org/x/sys/unix" ,go-golang-org-x-sys-unix)))
+    (propagated-inputs
+     `(("tmux" ,tmux)))
+    (arguments
+     '(#:import-path "github.com/junegunn/fzf"
+       #:install-source? #f
+       #:phases
+       (modify-phases %standard-phases
+         (replace 'build
+           (lambda _
+             (with-directory-excursion "src/github.com/junegunn/fzf"
+               (invoke "make"))))
+         (replace 'install
+           (lambda* (#:key outputs #:allow-other-keys)
+             (let ((out (assoc-ref outputs "out")))
+               (mkdir-p (string-append out "/share"))
+               (with-directory-excursion "src/github.com/junegunn/fzf"
+                 (invoke "make" "install")
+                 (copy-recursively "bin" (string-append out "/bin"))
+                 (copy-recursively "man" (string-append out "/share/man"))
+                 (copy-recursively "shell" (string-append out "/share/fzf")))))))))
+    (synopsis "Command line fuzzy finder")
+    (description
+     "@command{fzf} is a general purpose command line fuzzy finder.  It's an
+interactive uniz filter for command-line that can be used with any lists;
+files, command history, processes, hostnames, bookmarks, git commits, etc..")
+    (home-page "https://github.com/junegunn/fzf")
+    (license license:expat)))
+
 (define-public envstore
   (package
     (name "envstore")