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We are happy to announce the first release candidate of opam 2.6.0. You can view the full list of changes in the release note.

This version is a pre-release, we invite users to test it to spot previously unnoticed bugs as we head towards the stable release.

Try it!

The upgrade instructions are unchanged:

1. Either from binaries: run

For Unix systems

bash -c "sh <(curl -fsSL https://opam.ocaml.org/install.sh) --version 2.6.0~rc1"

or from PowerShell for Windows systems

Invoke-Expression "& { $(Invoke-RestMethod https://opam.ocaml.org/install.ps1) } -Version 2.6.0~rc1"

or download manually from the Github "Releases" page to your PATH.

1. Or from source, manually: see the instructions in the README.

You should then run:

opam init --reinit -ni

Changes compared to 2.6.0~beta2

• Fix a 2.6 performance regression where tar.gz repositories were read entirely twice per package installed (#7131)

• The release archive and opam's "lockfile" (used on request when building the opam source code from scratch) now contain most of opam's dependencies at their latest version (#7116)

Some other internal improvements were made. This release also includes a couple of extensions to our testsuite and documentation.

Please report any issues to the bug-tracker.

Happy hacking!