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@AltGr AltGr released this 22 Jun 14:33
· 2578 commits to master since this release
2.1.0-rc2
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This is the second release candidate of opam 2.1.0.
Binaries and full archive are signed by opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92).

It contains 2 fixes in addition to the original release candidate:

  • Fix upgrade issue from opam 2.1.0~alpha2+ where local switches were manually deleted (#4713)
  • Fix local switch format upgrade handling if they were created with an alpha or beta release of opam 2.1 (#4715)
  • Fix compilation of the z3 optional solver backend (#4717)

Release Candidate Overview

Since beta4, the release candidates further extend the CLI versioning feature and introduce support to allow tools compiled with older versions of the opam libraries to read opam roots which have been upgraded by a newer version of the opam client. Naturally, it includes many bug fixes since the last beta.

New features

  • CLI versioning: new "default" CLI where deprecated options are accepted (in the major version) if the CLI hasn't been explicitly selected with --cli (#4503)
  • CLI versioning now applies to environment variables and flag enums
  • Environment variables are now only read by the client when the configuration is loaded, rather than the library (#4606)
  • Deprecated build-doc, build-test, make flags (#4581)
  • Add --no, --confirm-level and OPAMCONFIRMLEVEL for automatic answering of prompts (#4582)
  • Add a --with-0install-solver option to the configure script to enable the 'builtin-0install' solver (#4646)
  • The options --root and --switch are now reflected in environment variables when building packages so that calls to opam during build access the correct root and switch (#4668)
  • Introduce a default-invariant config field, restore the 2.0 semantics for default-compiler (#4577)
  • opam roots upgraded to a newer version of opam are read in best effort mode by an older opam library (#4636)
  • Improve installation times by only tracking files listed in .install instead of the whole switch prefix when there are no install: instructions (and no preinstall commands) (#4422)
  • Opam file: Rename hidden-version to avoid-version (#4527)
  • Include doc field in opam-show (#4565)

Bug fixes

CLI versioning

  • Scrub OPAM* environment variables added since 2.0 from package builds to prevent warnings when a package calls opam (#4660)
  • Add opam config deprecated subcommands in the default cli (#4503)
  • Clearer messages about using --cli and OPAMCLI (#4655)

Plugin handling

  • Ensure the symlink for a plugin is maintained on each invocation and reset the plugin symlinks when the root is upgraded (#4619)
  • Expect plugins to end in .exe on Windows (#4709)

Switch & install

  • Don't patch file twice (#4529)
  • With --deps-only, set dependencies as root packages (#4502)
  • Keep global lock only if root format upgrade is performed (#4597)
  • Send the 'opam root layout update' message to stderr (#4692)
  • Fix default invariant with no system compiler (#4640)
  • Correct the message when more than one depext is missing (#4678)
  • Only display one conflict message when they are all owing to identical missing depexts (#4678)
  • Don't exclude base packages from rebuilds (made some sense in opam 2.0 with base packages but doesn't make sense with 2.1 switch invariants) (#4569)
  • Don't refer to base packages in messages any more (#4572)
  • Give the correct command when demonstrating switch creation (#4673)

Pin

  • Don't look for lock files for pin depends (#4505)
  • Fetch sources when pinning an already pinned package with a different url when using working directory (#4484)
  • Don't ask for confirmation for pinning base packages (similarly makes no sense with 2.1 switch invariants) (#4571)
  • Fix version pin source retrieving: mustn't error if archive opam file is malformed (#4580)
  • opam list --silent renamed to --check (#4323)

Opam variables

  • Fix sys-ocaml-cc, sys-ocaml-arch and sys-ocaml-libc when no system compiler installed (#4706)
  • Fix Not_found (config file) in config report (#4570)
  • Config report: Print variables of installed compilers and their (installed) dependencies (#4570)
  • Fix switch global variable resolving (#4684)
  • Fix hash package variable resolving (#4687)

Lint

  • Fix W59 & E60 for conf packages (no url required) (#4549)
  • Fix W59 & E60 with VCS urls, don't check upstream if url has VCS backend (#4635)
  • Add E67 checksum specified with non archive url (#4635)
  • Disable subpath warnings E63, W64 (#4638)

Lock & opam file

  • Don't write lock file with --read-only, --safe, and --dryrun (#4320)
  • Make opam lock consistent with opam install, on local pin always take last opam file even if uncommitted (#4320)
  • Fix features parser (#4507)
  • Fix rewriting with preserved format empty field error (#4628)
  • Require opam-file-format.2.1.3+ in order to enforce opam-version: "2.1" as first non-comment line (#4394)

External dependencies

  • Handle macport variants (#4297)
  • Always upgrade all the installed packages when installing a new package on Archlinux (#4556)
  • Handle some additional environment variables (OPAMASSUMEDEPEXTS, OPAMNODEPEXTS) (#4587)
  • Improve messages to hint that answering no doesn't abort installation (#4591)
  • Add support for non-interactive mode in macports (#4676)
  • Handling of packages of tagged repositories for alpine (#4670)
  • Clarify some assume-depexts related messages (#4662)
  • Warn the user if epel-release is missing and unavailable depexts are detected (#4669)
  • Ignore config yes automatic answering when asking confirmation to run install commands (#4680)
  • Don't check opam system dependencies on reinit after a format upgrade (#4638)

Sandbox

  • Fix the conflict with the environment variable name used by dune (#4535; fixes ocaml/dune#4166)
  • Kill builds on Ctrl-C with bubblewrap (#4400)
  • Various fixes (#4589 and #4609)

Solver

  • Fix Cudf preprocessing (#4624)
  • Add support for a few select criteria useful to CI to the 0install solver: +count(version-lag,solution) to always choose the oldest version available, +removed to not try to keep installed packages (#4631)
  • Allow to upgrade to a hidden-version package if a hidden-version package is already installed (#4525)

Misc

  • Add missing shell quoting to support space and special shell characters in switch directory path (#4707)
  • Rename state.cache to include the OpamVersion.magic() string. All .cache files are deleted if any cache file is written to, allowing multiple versions of the library to co-exist without constantly regenerating it (#4554)
  • Win32 Console: fix VT100 support (#3897 #4710)
  • Harden cygpath wrapper (#4625)
  • Formalise opam dev version detection with OpamVersion.is_dev_version (#4665)
  • Run the shell hooks with closed stdin (bash, zsh) (#4692)
  • Fix build from source when a dune-project file is presented in the parent directory (#4537)
  • Fix opam-devel.install not to install two files called opam (#4664)
  • Build release tags as non-dev versions, as for release tarballs (#4656)
  • Fix opam exec on native Windows when calling cygwin executables (#4588)
  • Fix temporary file with a too long name causing errors on Windows (#4590)
  • Tests and documentation extended and improved

Many thanks to @AltGr and @rjbou (OCamlPro), @dra27 and @kit-ty-kate (OCaml Labs), @emillon (Tarides), @dannywillems, @eth-arm, @LasseBlaauwbroek, @smorimoto and @UnixJunkie and everyone who's helped with issue reports, comments and feedback.

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