;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 John Darrington <jmd@gnu.org>
;;; Copyright © 2019 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages microcom)
  #:use-module (guix packages)
  #:use-module (guix licenses)
  #:use-module (guix git-download)
  #:use-module (guix download)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages readline)
  #:use-module (guix build-system gnu))

(define-public microcom
  (package
    (name "microcom")
    (version "2019.01.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://git.pengutronix.de/git/tools/microcom.git")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32 "0rf4qdkbhknrrqn4rpb737l0km8yn5f498zapks4akf6yjh5aq8y"))))
    (build-system gnu-build-system)
    (inputs (list readline))
    (native-inputs (list automake autoconf))
    (home-page  "https://git.pengutronix.de/?p=tools/microcom.git")
    (synopsis "Minimalistic serial line terminal program")
 (description "Microcom is a minimalistic terminal program for accessing
devices via a serial connection.  It features connection via RS232 serial
interfaces (including setting of transfer rates) as well as in @code{telnetmode}
as specified in rfc2217 and a (Linux specific) CAN mode.")
    (license gpl2+)))
987d41b9070ab5d1f4bceede529946be'>nix</a>/<a href='/guix/log/nix/libstore?id=a2da19d7987d41b9070ab5d1f4bceede529946be'>libstore</a>/<a href='/guix/log/nix/libstore/gc.cc?id=a2da19d7987d41b9070ab5d1f4bceede529946be'>gc.cc</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/nix/libstore/gc.cc?id=a2da19d7987d41b9070ab5d1f4bceede529946be&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-10-17 09:37:27 +0200'>2022-10-17</span></td><td><a href='/guix/commit/nix/libstore/gc.cc?id=eec920ba93ecb086366576e31b785962fbaf81c2'>Revert "nix: Guard against removing temporary roots of living processes."</a><span class='msg-avail'>...<span class='msg-tooltip'>This reverts commit bb0beaecdee1a2315a1269b1746d238c8ab0e699.  This
change broke a number of tests that assumed the previous behavior.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-10-07 16:54:20 -0400'>2022-10-07</span></td><td><a href='/guix/commit/nix/libstore/gc.cc?id=bb0beaecdee1a2315a1269b1746d238c8ab0e699'>nix: Guard against removing temporary roots of living processes.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://issues.guix.gnu.org/25018&gt;.

* nix/libstore/gc.cc (readTempRoots): Add a check to guard against removing
the temporary roots of a living process.

Signed-off-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-16 14:34:28 +0100'>2021-11-16</span></td><td><a href='/guix/commit/nix/libstore/gc.cc?id=472a0e82a52a3d5d841e1dfad6b13e26082a5750'>daemon: Do not deduplicate files smaller than 8 KiB.</a><span class='msg-avail'>...<span class='msg-tooltip'>Files smaller than 8 KiB typically represent ~70% of the entries in
/gnu/store/.links but only contribute to ~4% of the space savings
afforded by deduplication.

Not considering these files for deduplication speeds up file insertion
in the store and, more importantly, leaves 'removeUnusedLinks' with
fewer entries to traverse, thereby speeding it up proportionally.

Partly fixes &lt;https://issues.guix.gnu.org/24937&gt;.

* config-daemon.ac: Remove symlink hard link check and CAN_LINK_SYMLINK
definition.
* guix/store/deduplication.scm (%deduplication-minimum-size): New
variable.
(deduplicate)[loop]: Do not recurse when FILE's size is below
%DEDUPLICATION-MINIMUM-SIZE.
(dump-port): New procedure.
(dump-file/deduplicate)[hash]: Turn into...
[dump-and-compute-hash]: ... this thunk.
Call 'deduplicate' only when SIZE is greater than
%DEDUPLICATION-MINIMUM-SIZE; otherwise call 'dump-port'.
* nix/libstore/gc.cc (LocalStore::removeUnusedLinks): Drop files where
st.st_size &lt; deduplicationMinSize.
* nix/libstore/local-store.hh (deduplicationMinSize): New declaration.
* nix/libstore/optimise-store.cc (deduplicationMinSize): New variable.
(LocalStore::optimisePath_): Return when PATH is a symlink or smaller
than 'deduplicationMinSize'.
* tests/derivations.scm ("identical files are deduplicated"): Produce
files bigger than %DEDUPLICATION-MINIMUM-SIZE.
* tests/nar.scm ("restore-file-set with directories (signed, valid)"):
Likewise.
* tests/store-deduplication.scm ("deduplicate, below %deduplication-minimum-size"):
New test.
("deduplicate", "deduplicate, ENOSPC"): Produce files bigger than
%DEDUPLICATION-MINIMUM-SIZE.
* tests/store.scm ("substitute, deduplication"): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-06-06 15:43:35 -0700'>2020-06-06</span></td><td><a href='/guix/commit/nix/libstore/gc.cc?id=d445c30ea6f9693454ca96bae9089ba8738a6f78'>daemon: Handle EXDEV when moving to trash directory.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://bugs.gnu.org/41607&gt;.
Reported by Stephen Scheck &lt;singularsyntax@gmail.com&gt;.

* nix/libstore/gc.cc (LocalStore::deletePathRecursive): When we try to
move a dead directory into the trashDir using rename(2) but it returns
an EXDEV error, just delete the directory instead.  This can happen in a
Docker container when the directory is not on the "top layer".
</span></span></td><td>Chris Marusich</td></tr>