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From: Arun Isaac <arunisaac@systemreboot.net>
To: guix-devel@gnu.org
Subject: [PATCH 4/5] gnu: Add python2-larch.
Date: Wed,  8 Mar 2017 23:28:34 +0530	[thread overview]
Message-ID: <20170308175835.19402-4-arunisaac@systemreboot.net> (raw)
In-Reply-To: <20170308175835.19402-1-arunisaac@systemreboot.net>

* gnu/packages/python.scm (python2-larch): New variable.
---
 gnu/packages/python.scm | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 70833773f..476b6f9bf 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -13515,3 +13515,34 @@ than using `logging.Filter` to accomplish the same thing, which
 matters when code is run in production mode.  The actual logging still
 happens using the `logging` library.")
     (license license:gpl3+)))
+
+(define-public python2-larch
+  (package
+    (name "python2-larch")
+    (version "1.20151025")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append
+             "http://git.liw.fi/cgi-bin/cgit/cgit.cgi/larch/snapshot/larch-"
+             version ".tar.gz"))
+       (sha256
+        (base32
+         "1p4knkkavlqymgciz2wbcnfrdgdbafhg14maplnk4vbw0q8xs663"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:python ,python-2))
+    (propagated-inputs
+     `(("python2-tracing" ,python2-tracing)))
+    (home-page "https://liw.fi/larch/")
+    (synopsis "Python copy-on-write B-tree library")
+    (description "@code{python2-larch} is an implementation of
+particular kind of B-tree, based on research by Ohad Rodeh.  See
+http://liw.fi/larch/ohad-btrees-shadowing-clones.pdf for details on
+the data structure.
+
+The distinctive feature of this B-tree is that a node is never
+(conceptually) modified.  Instead, all updates are done by
+copy-on-write.  This makes it easy to clone a tree, and modify only the
+clone, while other processes access the original tree.")
+    (license license:gpl3+)))
-- 
2.11.0

  parent reply	other threads:[~2017-03-08 19:20 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-08 17:58 [PATCH 1/5] gnu: Add python2-cliapp Arun Isaac
2017-03-08 17:58 ` [PATCH 2/5] gnu: Add python2-ttystatus Arun Isaac
2017-03-08 17:58 ` [PATCH 3/5] gnu: Add python2-tracing Arun Isaac
2017-03-08 17:58 ` Arun Isaac [this message]
2017-03-08 17:58 ` [PATCH 5/5] gnu: Add obnam Arun Isaac
2017-03-09 16:23   ` Marius Bakke
2017-03-09 17:29     ` Arun Isaac
  -- strict thread matches above, loose matches on Subject: below --
2017-03-08 10:12 [PATCH 1/5] gnu: Add python2-cliapp Arun Isaac
2017-03-08 10:12 ` [PATCH 4/5] gnu: Add python2-larch Arun Isaac

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