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authorJulien Lepiller <julien@lepiller.eu>2019-02-03 17:29:33 +0100
committerJulien Lepiller <julien@lepiller.eu>2019-02-05 22:34:26 +0100
commit9e81db80eb10d0de751defac0218dcf20ee7a6db (patch)
treec73866bb4bf775a43e869777ba2091bc980fcc09
parent3e3d5ffc3483c95902a1bc3c40da76138611fb48 (diff)
gnu: Add ocaml-spawn.
* gnu/packages/ocaml.scm (ocaml-spawn): New variable.
-rw-r--r--gnu/packages/ocaml.scm44
1 files changed, 44 insertions, 0 deletions
diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index 7e7e58cf5f..a07c4efa97 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -6030,3 +6030,47 @@ Configurator allows one to:
@item generate config.h file
@end itemize")
(license license:asl2.0)))
+
+(define-public ocaml-spawn
+ (package
+ (name "ocaml-spawn")
+ (version "0.12.0")
+ (source (origin
+ (method git-fetch)
+ (uri (git-reference
+ (url "https://github.com/janestreet/spawn.git")
+ (commit (string-append "v" version))))
+ (sha256
+ (base32
+ "0amgj7g9sjlbjivn1mg7yjdmxd21hgp4a0ak2zrm95dmm4gi846i"))))
+ (build-system dune-build-system)
+ (arguments
+ `(#:phases
+ (modify-phases %standard-phases
+ (add-before 'check 'fix-tests
+ (lambda _
+ (substitute* "test/tests.ml"
+ (("/bin/pwd") (which "pwd"))
+ (("/bin/echo") (which "echo")))
+ #t)))))
+ (native-inputs
+ `(("ocaml-ppx-expect" ,ocaml-ppx-expect)))
+ (home-page "https://github.com/janestreet/spawn")
+ (synopsis "Spawning sub-processes")
+ (description
+ "Spawn is a small library exposing only one functionality: spawning sub-process.
+
+It has three main goals:
+
+@itemize
+@item provide missing features of Unix.create_process such as providing a
+working directory,
+@item provide better errors when a system call fails in the
+sub-process. For instance if a command is not found, you get a proper
+@code{Unix.Unix_error} exception,
+@item improve performances by using vfork when available. It is often
+claimed that nowadays fork is as fast as vfork, however in practice
+fork takes time proportional to the process memory while vfork is
+constant time. In application using a lot of memory, vfork can be
+thousands of times faster than fork.")
+ (license license:asl2.0)))