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| -rw-r--r-- | gnu/packages/ocaml.scm | 44 |
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))) |