We are pleased to announce the minor release of opam 2.0.8.

This new version contains some backported fixes:

  • Critical for fish users! Don't add . to PATH. [#4078]
  • Fix sandbox script for newer ccache versions. [#4079 and #4087]
  • Fix sandbox crash when ~/.cache is a symlink. [#4068]
  • User modifications to the sandbox script are no longer overwritten by opam init. [#4020 & #4092]
  • macOS sandbox script always mounts /tmp read-write, regardless of TMPDIR [#3742, addressing ocaml/opam-repository#13339]
  • pre- and post-session hooks can now print to the console [#4359]
  • Switch-specific pre/post sessions hooks are now actually run [#4472]
  • Standalone opam-installer now correctly builds from sources [#4173]
  • Fix arch variable detection when using 32bit mode on ARM64 and i486 [#4462]

A more complete release note is available.

Note: To homogenise macOS name on system detection, we decided to keep macos, and convert darwin to macos in opam. For the moment, in order to avoid breaking jobs & CIs, we keep uploading darwin & macos binaries, but from the 2.1.0 release, only macos ones will be kept.


Installation instructions (unchanged):

  1. From binaries: run

    sh <(curl -sL https://raw.githubusercontent.com/ocaml/opam/master/shell/install.sh)

    or download manually from the Github "Releases" page to your PATH. In this case, don't forget to run opam init --reinit -ni to enable sandboxing if you had version 2.0.0~rc manually installed or to update you sandbox script.

  2. From source, using opam:

    opam update; opam install opam-devel

    (then copy the opam binary to your PATH as explained, and don't forget to run opam init --reinit -ni to enable sandboxing if you had version 2.0.0~rc manually installed or to update you sandbox script)

  3. From source, manually: see the instructions in the README.

We hope you enjoy this new minor version, and remain open to bug reports and suggestions.

NOTE: this article is cross-posted on opam.ocaml.org and ocamlpro.com, and published in discuss.ocaml.org. Please head to the latter for the comments!