Merge pull request ocaml#13819 from diml/release-spawn-0.13.0

[new release] spawn (0.13.0)

packages/spawn/spawn.0.13.0/opam

@@ -0,0 +1,43 @@
+opam-version: "2.0"
+maintainer: "[email protected]"
+authors: ["Jane Street Group, LLC <[email protected]>"]
+homepage: "https://github.com/janestreet/spawn"
+bug-reports: "https://github.com/janestreet/spawn/issues"
+dev-repo: "git+https://github.com/janestreet/spawn.git"
+doc: "https://janestreet.github.io/spawn/"
+license: "Apache-2.0"
+build: [
+  ["dune" "build" "-p" name "-j" jobs]
+  # We don't test with OCaml < 4.04 as older versions of ppx_expect
+  # don't work with dune
+  ["dune" "runtest" "-p" name "-j" jobs] {with-test & ocaml >= "4.04" }
+]
+depends: [
+  "dune" {build}
+  "ppx_expect" {with-test}
+  "ocaml" {>= "4.02.3"}
+]
+synopsis: "Spawning sub-processes"
+description: """
+Spawn is a small library exposing only one functionality: spawning sub-process.
+
+It has three main goals:
+
+1. provide missing features of Unix.create_process such as providing a
+working directory
+
+2. provide better errors when a system call fails in the
+sub-process. For instance if a command is not found, you get a proper
+[Unix.Unix_error] exception
+
+3. 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.
+"""
+url {
+  src:
+    "https://github.com/janestreet/spawn/releases/download/v0.13.0/spawn-v0.13.0.tbz"
+  checksum: "md5=6eaadbf8f9231415b51658da6b8b090f"
+}