2.1.0

This is the release 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).

Please see blog post to discover this release's new features.

It contains some fixes since the second release candidate:

• Set DEBIAN_FRONTEND=noninteractive for unsafe-yes confirmation level (partially fixes #4731)
• Fix 2.1~alpha2 to 2.1 format upgrade for opam init --reinit (#4748)
• Fix --bypass-checks handling with --reinit (#4750)
• Fish: stop using deprecated ^ syntax to fix support for Fish 3.3.0+ (#4736)
• Fix build compatibility with Dune 2.9.0 (#4754)
• Fix depext alpine tagged repositories handling (#4758)

Many thanks to @AltGr and @rjbou (OCamlPro), @dra27 and @kit-ty-kate (OCaml Labs), @vzaliva and everyone who's helped with issue reports, comments and feedback.

2.0.9

This is the release of opam 2.0.9.

This minor release contains some fixes, please see blog post for upgrade instructions.

Binaries and full archive are signed by by opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92).

Changelog:

New features

• Back-ported ability to load upgraded roots read-only; allows applications compiled with opam-state 2.0.9 to load a root which has been upgraded to opam 2.1 (#4636)
• macOS sandbox now supports OPAM_USER_PATH_RO for adding a custom read-only directory to the sandbox (#4589, #4609)
• OPAMROOT and OPAMSWITCH now reflect the --root and --switch parameters in the package build (#4668)
• When built with opam-file-format 2.1.3+, opam-format 2.0.x displays better errors for newer opam files (#4394)

Bug fixes

• Stop clobbering DUNE_CACHE in the sandbox script (#4535, fixing ocaml/dune#4166)
• Ctrl-C now correctly terminates builds with bubblewrap; sandbox now requires bubblewrap 0.1.8 or later (#4400)
• Linux sandbox now mounts host $TMPDIR read-only, then sets the sandbox $TMPDIR to a new separate tmpfs (#4589)
• Linux sandbox script no longer makes PWD read-write on remove actions (#4589)
• Lint W59 and E60 no longer trigger for packages flagged conf (#4549)
• Reduce the length of temporary file names for pin caching to ease pressure on Windows (#4590)
• Security: correct quoting of arguments when removing switches (#4707)
• Stop advertising the removed option --compiler when creating local switches (#4718)
• Pinning no longer fails if the archive's opam file is malformed (#4580)
• Fish: stop using deprecated ^ syntax to fix support for Fish 3.3.0+ (#4736)

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

2.1.0~rc2

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.

2.1.0~rc

This is a 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).

Overview

This release candidate further extends the CLI versioning feature and introduces 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.

2.0.8

This is the release of opam 2.0.8.

This minor release contains some fixes, please see blog post for upgrade instructions.

Binaries and full archive are signed by by opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92).

Changelog:

Fish

• Add colon for fish MANPATH fix. [#4084 @rjbou - fix #4078]

Sandbox

• No error when linked directory doesn't exist (e.g. XDG defined) [#4278 @kit-ty-kate]
• Add quotes to avoid space unwanted behaviors [#4278 @kit-ty-kate]
• Handle CCACHE_DIR environment variable in sandbox script. [#4087 @rjbou - fix #4079]
• Follow links of ~/.cache & ~/.cache/dune for bwrap call. [#4087 @rjbou - fix #4068]
• Don't overwrite user's sandbow script modification. [#4020 #4092 @rjbou]
• On MacOS sandbox script, always read write mount /tmp [#3742 @rjbou - fix ocaml/opam-repository#13339]

Install

• The stdout of pre- and post-session hooks is now propagated to the user [#4382 @AltGr - fix #4359]
• Run switch pre/post sessions hooks [#4476 @rjbou - fix #4472]

Build

• Use version var in opam file instead of equal current version number in opamlib dependencies [#4178 @rjbou]
• Opam file build using dune [#4178 @rjbou #4229 @kit-ty-kate - fix #4173]
• Update opam file to 2.0 [#4371 @AltGr]

Internal

• Fix arch detection when using 32bit mode on ARM64 [#4462 @kit-ty-kate]
• Fix arch detection of i486 [#4462 @kit-ty-kate]

2.1.0~beta4

This is a third beta release of opam 2.1.0 (there was a glitch with the number).

This beta release contains quite a few improvements and fixes upon beta3.

Binaries and full archive are signed by opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92 ).

Overview

A more complete overview of opam 2.1.0~beta4 is on the platform blog.

CLI Versioning

--cli was added in the first beta, but is now used throughout the CLI (see #4385). When invoking opam from a script or program, we recommend using --cli=2.1. If you need to be compatible with 2.0, you can set the environment variable OPAMCLI to 2.0 (this is done automatically by opam when building packages).

As with changes in the Dune language, changes to opam's CLI are now immediate - for example, --unlock-base is now unavailable without selecting the opam 2.0 CLI (you must use --update-invariant). Like Dune, opam tries to be helpful and the errors include pointers to the new syntax.

Other new features

• opam now exits with code 31 if all failures were during fetch operations (#4214)
• opam install now has a --download-only flag (#4036), allowing opam's caches to be primed
• opam init now advises the correct shell-specific command for eval $(opam env) (#4427)
• post-install hooks are now allowed to modify or remove installed files (#4388)
• New package variable opamfile-loc with the location of the installed package opam file (#4402)
• opam update now has --depexts flag (#4355), allowing the system package manager to update too
• depext support NetBSD and DragonFlyBSD added (#4396)
• The format-preserving opam file printer has been overhauled (#3993, #4298 and #4302)
• pins are now fetched in parallel (#4315)
• os-family=ubuntu is now treated as os-family=debian (#4441)
• opam lint now checks that strings in filtered package formulae are booleans or variables (#4439)

Bug fixes

• Sandboxing and init script fixes (#4368 and #4482)
• stdout of pre- and post-session hooks is now propagated to the user (#4359)
• Switch-specific hooks now work (#4472)
• Various fixes to architecture detection (#4462)
• Don't advertise upgrades to hidden versions (#4432)
• Don't recompile when modifying the package flags (#4477)
• opam remove --autoremove <PKG> no longer removes unrelated packages or triggers conflicts with orphaned packages (#4250 and #4332)
• opam switch --update-invariant not changing the invariant when removing or changing package name (#4353)
• Fixed updates of the invariant with --update-invariant (#4431) ** NO DESCRIPTION **
• Various pinning fixes (#4255, #4365, #4348 and #4399)
• --working-dir now works with local switches (#4433)
• Handling of filename-encoded pkgname in opam files now works (#4401)
• Display of package variables when there's no config file now no longer loads switch state and works (#4428)
• Allow short names and full name paths for ports-based systems for depext; affects OpenBSD, FreeBSD and Gentoo (#4396)
• Fixed opam option depext-bypass-=["XXX"] (#4428) ** NO DESCRIPTION **
• opam admin cache now uses the archives cache (#4352)
• opam admin check --cycles no longer explodes on repositories with huge cliques (#4392)
• Solver fixes (#4362, #4393 and #4357)
• Fixed permission denied fallback calling openssl (#4449 - part of #4448)
• --read-only now causes fewer cache updates (#4467 - part of #4354)

Many thanks to @AltGr and @rjbou (OCamlPRO), @emillon (Tarides), @kit-ky-kate (OCaml Labs), @alan-j-hu, @Armael, @Blaisorblade, @freevoid, @gahr and @lefessan and everyone who's helped with issue reports, comments and feedback.

2.1.0~beta2

This is a second beta release of opam 2.1.0.

This beta release contains a few important fixes upon 2.1.0~beta, and improved conflict error messages.

Binaries and full archive are signed by opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92 ).

Changelog

Global CLI

• Reduce startup time with better use of more caches, etc. [#4341 @AltGr]
• Do not load the full state on opam exec when not necessary [#4341 @AltGr]

Init

• Fix the sandboxing check introduced in beta1 [#4342 @AltGr]

Pin

• Fix the --with-version flag, which wasn't always honored [#4346 @AltGr]

External dependencies

• Upgrade bootstrap OCaml compiler from 4.09.1 to 4.11.1 [#4242 @avsm @dra27 @MisterDA @rjbou]

Test

• Update and expand Travis and AppVeyor test matrices [#4242 @MisterDA]

Solver

• More concise explanation of package conflicts [#4349 @AltGr]

Internal

• Switch AppVeyor Cygwin from snapshot back to main repository [#4338 @dra27]

2.1.0~beta

This is the first beta release of opam 2.1.0.

This beta release contains many fixes and a few polished or new features upon alpha3.

Binaries and full archive are signed by opam dev team (fingerprint 92C5 26AE 50DF 3947 0EB2 911B ED4C F1CA 67CB AA92 ).

Changelog

Possibly scripts breaking changes are prefixed with ✘.
New option/command/subcommand are prefixed with ◈.

Global CLI

• ◈ --cli / OPAMCLI option added [#4316 @dra27]
• ✘ --yes passed to all commands, and plugins [#4316 @dra27]

Init

• On init, check availability of sandbox and propose to disable [#4284 @rjbou - fix #4089]

Config Upgrade

• config upgrade: on the fly upgrade if no write lock required [#4313 @rjbou]

Pin

• ◈ Add pin scan subcommand to list available pins [#4285 @rjbou]
• ◈ Add --normalise option to print a normalised list when scanning, that can be taken by opam pin add [#4285 @rjbou]
• OpamCommand.pin refactor, including adding OpamClient.PIN.url_pins to pin a list of package with url [#4285 #4301 @rjbou]
• ◈ Add with-version option to set the pinned package version [#4301 @rjbou]
• `OpamPinCommand.source_pin', for new package confirmation, don't check that no opam file is given as argument [#4301 @rjbou]

Switch

• Support -n as an alias of --no-action (to match opam-pin) [#4324 @dra27]

List

• form no longer advertised as valid for --columns [#4322 @dra27]

Lock

• Support -d as alias of --direct-only (to match plugin) [#4319 @dra27]

VCS

• Add error message in case git repo is empty [#4303 @rjbou - fix #3905]

Admin

• form no longer advertised as valid for --columns in list [#4322 @dra27]

Solver

• Don't penalise packages with more recent hidden-versions [#4312 @AltGr]

Client

• Provide all functions in the client library [#4329 @AltGr]

Internal

• Process: don't display status line if not verbose, and status line disabled [#4285 @rjbou]
• Optimise package name comparison [#4328 @AltGr - fix #4245]

Documentation

Various contributors helped us to update and add code documentation:

• [#4334 @smorimoto]
• [#4317 @dra27]

2.1.0~alpha3

2.1.0-alpha3

2.1.0~alpha3

2.1.0~alpha2

This is the second alpha release of opam 2.1.0.

This alpha release contains many fixes and a few polished or new features upon alpha1.

Binaries and full archive are signed by AltGr.

Changelog

Possibly script-breaking changes are prefixed with ✘
New options are prefixed with ◈

Init

• Remove m4 from the list of recommended tools [#4184 @kit-ty-kate]
• Fix config solver field ignored [#4243 @rjbou - fix #4241]

Upgrade

• Fix atoms formula restriction with --all [#4221 @rjbou - fix #4218]

Archives fetch

• Copy instead of calling rsync when archives are in a local cache [#4270 @kit-ty-kate]

Install

• Add _build to rsync exclusion list [#4230 @rjbou - fix #4195]
• Recursive opam file lookup: ignore _build [#4230 @rjbou]
• Assume-built fix & rewriting [#4211 @rjbou]

Remove

• Fix autoremove env var handling [#4219 @rjbou - fix #4217]

Switch

• Fix Not_found with opam switch create . --deps [#4151 @AltGr]
• Package Var: resolve self name variable for orphan packages [#4228 @rjbou - fix #4224]
• ✘ Reject (shell) character on switch names [#4237 @rjbou - fix #4231]
• Fix OPAMSWITCH empty string setting, consider as unset [#4237 @rjbou]
• Add missing depext to unavailable reasons [#4194 @rjbou - fix #4176]
  • Fix not found error [#4279 @rjbou]
• ✘ Bump config file version to 2.1 (new depext fields) [#4280 @rjbou - fix #4266]

Pin

• Add depext handling on new pinned packages [#4194 @rjbou - fix #4189]
• Don't keep unpinned package version if it exists in repo [#4073 @rjbou - fix #3630]
• Fix path resolving when pinning with file:// [#4209 @rjbou - fix #4208]
• ✘ Disable recursive & subpath pinning (only present experimentally in opam 2.1.0~alpha) [#4252 @rjbou]

List

• Add --no-depexts option to disable depexts packages unavailability [#4194 @rjbou - fix #4205]
• Warn if packages are not listed because of depexts unavailability [#4194 @rjbou - fix #4205]

Show

• ✘ Display error message for all not found packages [#4179 @rjbou - fix #4164]
• ✘ Keep package order given via cli [#4179 @rjbou - fix #4163]
• --sort apply to with all options, not only --just-file [#4179 @rjbou]

Var

• Add scope display on Not found message [#4192 @rjbou]
• No scope needed for variable display [#4192 @rjbou - fix #4183]
• Fix package variable resolution [#4192 @rjbou - fix #4182]

Option

• Fix messages advertising a command in an obsolete format [#4194 @rjbou]
• Add switch depext-bypass as modifiable field [#4194 @rjbou - fix #4177]

Lint

• E65: check that url local paths are absolute [#4209 @rjbou]

External dependencies handling, aka depext

• Fix arch query [#4200 @rjbou]
• Add message when adding a package to depext-bypass [#4194 @rjbou]
• Fix performance issue of depext under Docker/debian [#4165 @AltGr]
• Refactor package status [#4152 #4200 @rjbou]
• Add environment variables handling [#4200 @rjbou]
• Add Macport support [#4152 @rjbou]
• Homebrew: add no auto update env var for install, accept pkgname and pkgname@version on query [#4200 @rjbou]
• Tag packages with missing depexts in Cudf [#4235 @AltGr]
• Force LC_ALL=C for query commands [#4200 @rjbou]
• Put back opam-depext-2.0's behaviour with regards to asking users' consent before installing system packages [#4168 @kit-ty-kate @rjbou]
• Add OPAMDEPEXTYES env variable to pass --yes options to system package manager [#4168 @kit-ty-kate @rjbou]
• Fix install command dryrun [#4200 @rjbou]
• ◈ Add --depext-only to install only external dependencies, regardless of config depext status [#4238 @rjbou]
• Move confirmation message after opam packages install [#4238 @rjbou]
• Error if --depext-only is given with --assume-depexts or --no-depexts [#4238 @rjbou]
• Handle debian virtual packages [#4269 @AltGr @rjbou - fix #4251]

Sandbox

• No error when linked directory doesn't exist (e.g. XDG defined) [#4278 @kit-ty-kate]
• Add quotes to avoid space unwanted behaviors [#4278 @kit-ty-kate]

Repository management

• Fix temp files repository cleaning [#4197 @rjbou]

Build

• Opam file build using dune, removal of opam-%.install makefile target [#4178 @rjbou #4229 @kit-ty-kate - fix #4173]
• Use version var in opam file instead of equal current version number in opamlib dependencies [#4178 @rjbou]
• src ext: fix extlib url [#4248 @rjbou]
• Bump to 2.1.0~alpha2 version [#4253 @rjbou]

Infrastructure

• Use OCaml 4.09.1 for the make cold target [#4257 @dra27]

Admin

• Fix admin cache synchronisation message [#4193 @rjbou - fix #4167]

Opam installer

• For paths, remove use of empty switch in favor of a context-less module [#4237 @rjbou]

Opam file

• Fix mismatching extra files detection [#4198 @rjbou]

Solver

• Fix Cudf generation for compat with external solvers [#4261 @AltGr]
• Check for a solution before calling the solver [#4263 @AltGr]
• Add the package flag hidden-version to discourage selection by the solver [#4281 @AltGr]
• Tweak the default criteria to handle missing-depexts and hidden-version flags [#4281 @AltGr]

Internal

• Disable chrono when timestamps are disables [#4206 @rjbou]
• Expose some functionality in the OpamAction, OpamPath and OpamSwitchState modules for use without a switch value [#4147 @timberston]
  • Path: introduce a functor to permit replicating switch layout in different contexts
• Std: Add map_reduce to Set and Map [#4263 @AltGr]
• Fix regression in command resolution from #4072 [#4265 @dra27]

Test

• Add show cram test [#4206 @rjbou]
• Add envrionnement variable handling on cram test [#4206 @rjbou]

Documentation

Various contributors helped us to update and add code documentation:

• [#4264 @dra27]
• [#4273 @robz]
• [#4197 #4236 #4252 @rjbou]