gnu: Add pw.

* gnu/packages/monitoring.scm (pw): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Paul A. Patience 2022-07-04 05:05:37 +00:00 committed by Ludovic Courtès
parent fa65e645e9
commit 3a3a32af12
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@ -10,6 +10,7 @@
;;; Copyright © 2021, 2022 Marius Bakke <marius@gnu.org>
;;; Copyright © 2021 Stefan Reichör <stefan@xsteve.at>
;;; Copyright © 2021 Raphaël Mélotte <raphael.melotte@mind.be>
;;; Copyright © 2022 Paul A. Patience <paul@apatience.com>
;;;
;;; This file is part of GNU Guix.
;;;
@ -682,3 +683,63 @@ (define-public fatrace
power saving.")
(home-page "https://github.com/martinpitt/fatrace")
(license license:gpl3+)))
(define-public pw
(package
(name "pw")
(version "2")
(source
(origin
(method git-fetch)
(uri (git-reference
(url "https://www.kylheku.com/git/pw")
(commit (string-append "pw-" version))))
(file-name (git-file-name name version))
(sha256
(base32 "1xn3qnzz48xan78cp83hfrcifrxx9lgnm14134qhyr5wvj7dk246"))))
(build-system gnu-build-system)
(arguments
(list #:tests? #f ; There are no tests
#:make-flags
#~(list (string-append "CC=" #$(cc-for-target))
(string-append "DESTDIR=" #$output))
#:phases
#~(modify-phases %standard-phases
(add-after 'unpack 'fix-makefile
(lambda _
(substitute* "Makefile"
(("/share/man/man1 \\\\") "/share/man/man1; \\"))))
(delete 'configure)
(add-before 'install 'make-install-dirs
(lambda _
(mkdir-p (string-append #$output "/bin"))
(mkdir-p (string-append #$output "/share/man/man1"))
(mkdir-p (string-append #$output "/share/man/man5")))))))
(home-page "https://www.kylheku.com/cgit/pw/")
(synopsis "Monitor recent lines of output from pipe")
(description
"@command{pw} is Pipe Watch, a utility that continuously reads lines of
text from a pipe or pipe-like source, passes them through a FIFO buffer, and
maintains a display based on the occasional sampling of the contents of the
FIFO buffer, with useful features such as triggering and filtering.
With @command{pw} you can:
@itemize
@item Interactively apply and remove filters on-the-fly, without interrupting
the source.
@item Make recurring patterns in the stream appear to ``freeze'' on the
screen, using triggers.
@item Prevent the overwhelming amount of output from a program from flooding
the terminal, while consuming all of that output so that the program isn't
blocked. @command{pw} can pause its display updates entirely.
@item Juggle multiple shell background jobs that produce output, yet execute
indefinitely without blocking. When @command{pw} runs as part of a shell
background job, it continues to consume input, process filters and take
snapshots, without displaying anything. When put into the foreground again,
display resumes.
@end itemize")
(license license:bsd-2)))