2.6.0~rc1

This is the first candidate of opam 2.6.0.

Binaries and full archive are signed by the opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92).
To verify the authenticity of one of these files, run the following commands:

curl -fsSLO https://opam.ocaml.org/opam-dev-pubkey.pgp
gpg --import opam-dev-pubkey.pgp
gpg --verify *.sig

Please see our blog post for more details and the upgrade instructions.

Changelog:

Changes

Install

• Fix a 2.6 performance regression where tar.gz repositories were read entirely twice per package installed [#7131 @kit-ty-kate]

Build and release

• Upgrade the "lockfile" with all the most up-to-date dependencies available (ocaml.4.14.4, base64.3.5.2, spdx_licenses.1.5.0, menhir.20260209, patch.3.1.2, checkseum.0.5.3) [#7116 @kit-ty-kate]
• Update the OCaml compiler used for releases to 4.14.4 [#7116 @kit-ty-kate]

Internal

• Add a debug log upon reading an archive [#7131 @kit-ty-kate]
• Improve and extend the testsuite [#7131 @kit-ty-kate]
• Improve the documentation [#7082 @RyanGibb]