v2.7.1

See https://haskellstack.org/ for installation and upgrade instructions.

Changes since v2.5.1.1:

Behavior changes:

• stack repl now always warns about GHCi problems with loading multiple
  packages. It also sets now proper working directory when invoked with
  one package. See
  #5421

• custom-setup dependencies are now properly initialized for stack dist.
  This makes explicit-setup-deps no longer required and that option was
  removed. See
  #4006

Other enhancements:

• Nix integration now passes ghcVersion (in addition to existing ghc) to
  shell-file as an identifier that can be looked up in a compiler attribute set.

• Nix integration now allows Nix integration if the user is ready in nix-shell.
  This gets rid of "In Nix shell but reExecL is False" error.

• stack list is a new command to list package versions in a snapshot.
  See #5431

• Consider GHC 9.0 a tested compiler and remove warnings.

• custom-preprocessor-extensions is a new configuration option for allowing
  stack to be aware of any custom preprocessors you have added to Setup.hs.
  See #3491

• Added --candidate flag to upload command to upload a package candidate
  rather than publishing the package.

• Error output using --no-interleaved-output no longer prepends indentating
  whitespace. This allows emacs compilation-mode and vim quickfix to locate
  and track errors. See
  #5523

Bug fixes:

• stack new now suppports branches other than master as default for
  GitHub repositories. See
  #5422

• Ignore all errors from hi-file-parser. See
  #5445 and
  #5486.

• Support basic auth in package-indices. See
  #5509.

• Add support for parsing .hi. files from GHC 8.10 and 9.0. See
  hi-file-parser#2.

Thanks to all our contributors for this release:

• Aaron Allen
• Alexey Kuleshevich
• Andreas Källberg
• Domen Kožar
• Emanuel Borsboom
• Felix Yan
• Jens Petersen
• Kirill Zaborsky
• Marcin Tolysz
• Matt Audesse
• Matthew Wraith
• Michael Snoyman
• Mike Pilgrem
• Simon Michael

v2.7.0.3 (release candidate)

Release notes:

• Stack's bindists are now built with GHC 8.10.4, and our stack.yaml has
  moved to lts-17.10. This means Stack can now be built on macOS 11.0 (Big
  Sur) without ugly workarounds. GHC 8.8 is now the minimum GHC version
  supported for building Stack itself (but this does not effect users of
  Stack, which still supports using much older GHC versions).

Changes since v2.7.0.1:

(no changes)

v2.7.0.1 (release candidate)

Changes since v2.5.1.1:

Behavior changes:

• stack repl now always warns about GHCi problems with loading multiple
  packages. It also sets now proper working directory when invoked with
  one package. See
  #5421

• custom-setup dependencies are now properly initialized for stack dist.
  This makes explicit-setup-deps no longer required and that option was
  removed. See
  #4006

Other enhancements:

• Nix integration now passes ghcVersion (in addition to existing ghc) to
  shell-file as an identifier that can be looked up in a compiler attribute set.

• Nix integration now allows Nix integration if the user is ready in nix-shell.
  This gets rid of "In Nix shell but reExecL is False" error.

• stack list is a new command to list package versions in a snapshot.
  See #5431

• Consider GHC 9.0 a tested compiler and remove warnings.

• custom-preprocessor-extensions is a new configuration option for allowing
  stack to be aware of any custom preprocessors you have added to Setup.hs.
  See #3491

• Added --candidate flag to upload command to upload a package candidate
  rather than publishing the package.

• Error output using --no-interleaved-output no longer prepends indentating
  whitespace. This allows emacs compilation-mode and vim quickfix to locate
  and track errors. See
  #5523

Bug fixes:

• stack new now suppports branches other than master as default for
  GitHub repositories. See
  #5422

• Ignore all errors from hi-file-parser. See
  #5445 and
  #5486.

• Support basic auth in package-indices. See
  #5509.

• Add support for parsing .hi. files from GHC 8.10 and 9.0. See
  hi-file-parser#2.

v2.5.1

See https://haskellstack.org/ for installation and upgrade instructions.

Changes since v2.3.3

Major changes:

• Add the snapshot-location-base yaml configuration option, which allows to
  override the default location of snapshot configuration files. This option
  affects how snapshot synonyms (LTS/Nightly) are expanded to URLs by the
  pantry library.
• docker-network configuration key added to override docker --net arg

Behavior changes:

• File watching now takes into account specified targets, old behavior could
  be restored using the new flag --watch-all
  #5310

Other enhancements:

• stack ls dependencies json now includes fields sha256 and size for
  dependencies of type archive in location.
  #5280
• Build failures now show a hint to scroll up to the corresponding section
  #5279
• Customisable output styles (see stack --help and the --stack-colors
  option, and stack ls stack-colors --help) now include info, debug,
  other-level, secondary and highlight, used with verbose output.

Bug fixes:

• Fix stack test --coverage when using Cabal 3
• stack new now generates PascalCase'd module name correctly.
  #5376
• Connection issues to Casa server no longer cause builds to failure. Casa acts
  only as an optimizing cache layer, not a critical piece of infrastructure.
• Fix modified time busting caches by always calculating sha256 digest during
  the build process.
  #5125

Thanks to all our contributors for this release:

• Andrea Condoluci
• Andreas Herrmann
• Andres Schmois
• Ariel D. Moya Sequeira
• Brandon Chinn
• Cheah Jer Fei
• DerpyCrabs
• Emanuel Borsboom
• Felix Yan
• Jannik Theiß
• Jens Petersen
• Junji Hashimoto
• Kirill Zaborsky
• Michael Snoyman
• Mihai Maruseac
• Mike Pilgrem
• Niklas Hambüchen
• Ondřej Slámečka
• Piper McCorkle
• Thomas Lopatic
• tomjaguarpaw

v2.5.0.1 (release candidate)

Changes since v2.3.3

Major changes:

• Add the snapshot-location-base yaml configuration option, which allows to
  override the default location of snapshot configuration files. This option
  affects how snapshot synonyms (LTS/Nightly) are expanded to URLs by the
  pantry library.
• docker-network configuration key added to overwrite docker --net arg

Behavior changes:

• File watching now takes into account specified targets, old behavior could
  be restored using the new flag --watch-all
  #5310

Other enhancements:

• stack ls dependencies json now includes fields sha256 and size for
  dependencies of type archive in location.
  #5280
• Build failures now show a hint to scroll up to the corresponding section
  #5279
• Customisable output styles (see stack --help and the --stack-colors
  option, and stack ls stack-colors --help) now include info, debug,
  other-level, secondary and highlight, used with verbose output.

Bug fixes:

• Fix stack test --coverage when using Cabal 3
• stack new now generates PascalCase'd module name correctly.
  #5376
• Connection issues to Casa server no longer cause builds to failure. Casa acts
  only as an optimizing cache layer, not a critical piece of infrastructure.
• Fix modified time busting caches by always calculating sha256 digest during
  the build process.
  #5125

v2.3.3

See https://haskellstack.org/ for installation and upgrade instructions.

Changes since v2.3.1

Other enhancements:

• Add the stack-developer-mode flag

Bug fixes:

• When using the STACK_YAML env var with Docker, make the path absolute.
• Fix the problem of stack repl foo:test:bar failing without a project
  build before that. See
  #5213
• Fix stack sdist introducing unneded sublibrary syntax when using
  pvp-bounds. See
  #5289

Thanks to all our contributors for this release:

• coord.e
• Dmitry Dzhus
• Emanuel Borsboom
• Kirill Zaborsky
• Michael Snoyman

v2.3.1

See https://haskellstack.org/ for installation and upgrade instructions.

Release notes:

• We have reduced the number of platforms that we support with binary releases.
  The reason behind this is that we've been slowed down in our release process
  until now with issues trying to build binaries for less common platforms. In
  order to make sure we can address issues more quickly (like supporting new
  GHC versions), we're limiting support from the Stack team to:

  • Linux 64-bit (static)
  • macOS
  • Windows 64-bit

  If others want to provide additional binaries, we will definitely be happy
  for the support. But since our CI system is currently able to produce these
  three bindists only, that's what we will be providing with the next release.

• Since we no longer have dynamically linked Linux binaries, we are removing
  removing the -static suffix from the static Linux binaries. If you have
  scripts to download the latest stable Linux binary, update them to use
  linux-x86_64 instead of linux-x86_64-static (if you are already using the
  former, nothing needs to change). For this release, both are supported, but
  the next release will no longer have the -static variant.

• We are also deprecating the download links at https://stackage.org/stack.
  See this page for the current installation instructions:
  https://docs.haskellstack.org/en/stable/install_and_upgrade/.

• These are the canonical locations to download the latest stable binaries
  from, and will continue to be supported going forward:

  • Linux 64-bit (static): https://get.haskellstack.org/stable/linux-x86_64.tar.gz
  • macOS: https://get.haskellstack.org/stable/osx-x86_64.tar.gz
  • Windows 64-bit: https://get.haskellstack.org/stable/windows-x86_64.zip

  As always, binaries for specific versions are available from the Github
  releases: https://github.com/commercialhaskell/stack/releases.

Changes since v2.1.3.1

Major changes:

• setup-info-locations yaml configuration now allows overwriting the default locations of stack-setup-2.yaml.
  #5031
  #2983
  #2913

• The setup-info configuration key now allows overwriting parts of the default setup-info

• The --setup-info-yaml command line flag now may be used in all stack commands such as stack build, and not only in stack setup

• The --setup-info-yaml may specify multiple locations for stack-setup.yaml files.

• The stack upload can read first reads environment Variable $HACKAGE_USERNAME and $HACKAGE_PASSWORD if they are missing only then asks for username or password

• Fully remove GHCJS support.

• Remove the freeze command. It has been replaced by lock files.

Behavior changes:

• Remove the deprecated --stack-setup-yaml command line argument in favor of --setup-info-yaml
  #2647

• We now recommend checking in generated cabal files for repos. When generating lock files for
  extra-deps that only include package.yaml files, a deprecation warning will be generated.
  Also, those packages will no longer be included in the generated lock files.
  See #5210.

Other enhancements:

• Add build-output-timestamps flag in yaml. Setting it to true
  prefixes each build log output line with a timestamp.

• Show warning about local-programs-path with spaces on windows
  when running scripts. See
  #5013

• Add ls dependencies json which will print dependencies as JSON.
  ls dependencies --tree is now ls dependencies tree. See
  #4424

• Remove warning for using Stack with GHC 8.8-8.10, and Cabal 3.0-3.2.

• Allow relative paths in --setup-info-yaml and tool paths
  #3394

• Added the --only-locals flag. See
  #5272

Bug fixes:

• Upgrade pantry: module mapping insertions into the database are now atomic.
  Previously, if you SIGTERMed at the wrong time while running a script, you
  could end up with an inconsistent database state.

• --resolver global doesn't retrieve snapshots list from the internet
  beause doesn't need it. See #5103

• Fix using relative links in haddocks output. See
  #4971.

• Do not include generated cabal file information in lock files. See
  #5045.

• Use proper Hoogle executable path when installed automatically. See
  #4905

• Fix GHC version for batched package unregistration. See
  #4951

• Use Hoogle from the snapshot used and not the latest version. See
  #4905

• Resolve "'stty' is not recognized". See
  #4901

• Fix missing reconfigure check causing errors when a package gets
  used in multiple projects. See
  #5147

Thanks to all our contributors for this release:

• Adam McCullough
• Akshay Mankar
• Brian Wignall
• Cheah Jer Fei
• Chris Done
• David Baynard
• davit nalchevanidze
• Dino Morelli
• Emanuel Borsboom
• Felix Yan
• flip111
• Flowers Safety
• Fred Miller
• Fyrbll
• gdziadkiewicz
• Good boy
• Hypnoes.Liu
• Iisus
• Iustin Pop
• ivanbakel
• Javier Neira
• Jeff Happily
• jeffhappily
• jneira
• Justin Le
• Kirill Zaborsky
• Leif Metcalf
• Leonhard Markert
• Lokesh Mohanty
• Matt Audesse
• Michael Snoyman
• Mihai Maruseac
• NightRa
• Phil Ruffwind
• qinzhenlong
• Robert Hensing
• Sasha Bogicevic
• Sibi
• Sibi Prabakaran
• Simon Michael
• Steve Mao
• Vlad Ki
• Xia Li-yao

v2.3.0.1 (RELEASE CANDIDATE)

First release candidate for v2.3

Changes since v2.1.3

Release notes:

Major changes:

• setup-info-locations yaml configuration now allows overwriting the default locations of stack-setup-2.yaml.
  #5031
  #2983
  #2913

• The setup-info configuration key now allows overwriting parts of the default setup-info

• The --setup-info-yaml command line flag now may be used in all stack commands such as stack build, and not only in stack setup

• The --setup-info-yaml may specify multiple locations for stack-setup.yaml files.

• The stack upload can read first reads environment Variable $HACKAGE_USERNAME and $HACKAGE_PASSWORD if they are missing only then asks for username or password

• Fully remove GHCJS support.

• Remove the freeze command. It has been replaced by lock files.

Behavior changes:

• Remove the deprecated --stack-setup-yaml command line argument in favor of --setup-info-yaml
  #2647

• We now recommend checking in generated cabal files for repos. When generating lock files for
  extra-deps that only include package.yaml files, a deprecation warning will be generated.
  Also, those packages will no longer be included in the generated lock files.
  See #5210.

Other enhancements:

• Add build-output-timestamps flag in yaml. Setting it to true
  prefixes each build log output line with a timestamp.

• Show warning about local-programs-path with spaces on windows
  when running scripts. See
  #5013

• Add ls dependencies json which will print dependencies as JSON.
  ls dependencies --tree is now ls dependencies tree. See
  #4424

• Remove warning for using Stack with GHC 8.8 and Cabal 3.0.

• Allow relative paths in --setup-info-yaml and tool paths
  #3394

Bug fixes:

• Upgrade pantry: module mapping insertions into the database are now atomic.
  Previously, if you SIGTERMed at the wrong time while running a script, you
  could end up with an inconsistent database state.

• --resolver global doesn't retrieve snapshots list from the internet
  beause doesn't need it. See #5103

• Fix using relative links in haddocks output. See
  #4971.

• Do not include generated cabal file information in lock files. See
  #5045.

• Use proper Hoogle executable path when installed automatically. See
  #4905

• Fix GHC version for batched package unregistration. See
  #4951

• Use Hoogle from the snapshot used and not the latest version. See
  #4905

• Resolve "'stty' is not recognized". See
  #4901

• Fix missing reconfigure check causing errors when a package gets
  used in multiple projects. See
  #5147

v2.1.3

See https://haskellstack.org/ for installation and upgrade instructions.

Changes since v2.1.1

Behavior changes:

• Disable WAL mode for SQLite3 databases, to improve compatibility with
  some platforms and filesystems. See
  #4876.

• By default, do not perform expiry checks in Hackage Security. See
  #4928.

Other enhancements:

• Do not rerun expected test failures. This is mostly a change that
  will only affect the Stackage Curator use case, but there is now an
  additional message letting the user know when a previously-failed
  test case is being rerun.

• Move configure information for local packages back to .stack-work to
  improve caching. See
  #4893.

Bug fixes:

• Fix to allow dependencies on specific versions of local git repositories. See
  #4862

• Allow Stack commands to be run in Nix mode without having a project file
  available. See
  #4854.

• Removes dependency on gnu-tar for OSX and Linux environment. The
  --force-local option was required only for windows environment.

• Properly wait for the tar subprocess to complete before returning, thereby
  avoiding a SIGTERM screwing up GHC installation. See
  #4888.

• Use package complete locations from lock files when resolving dependencies
  in extra-deps. See
  #4887.

• Set the HASKELL_DIST_DIR environment to a proper package dist
  directory so doctest is able to load modules autogenerated by Cabal.

• Expose package library when running tests.

• Fix support for non-ASCII module names. See
  4938

Other changes:

• Rename pantry-tmp package back to pantry, now that we have gained
  maintainership (which had been used by someone else for a candidate-only test
  that made it look like the name was free but prevented uploading a real
  package).

Thanks to all our contributors for this release:

• Alan Malloy
• Alexander
• Emanuel Borsboom
• Kirill Zaborsky
• Matt Audesse
• Michael Snoyman
• Mihai Maruseac
• Sibi Prabakaran

v2.1.1

The Stack 2 release represents a series of significant changes to how Stack works internally. For the vast majority of cases, these changes are backwards compatible, in that existing projects will continue to build in the same way with Stack 2 as they did with Stack 1. The large version bump is due to the fundamental internal changes to cache handling, database storage (using SQLite in place of binary files), implicit snapshots (which greatly improve the precompiled cache), and moving to Pantry. We have also removed some less used features, as listed in the release notes below.

See https://haskellstack.org/ for installation and upgrade instructions.

Changes since v1.9.3

Major changes:

• Switch over to pantry for managing packages. This is a major change
  to Stack's internals, and affects user-visible behavior in a few
  places. Some highlights:
  • Drop support for multiple package indices and legacy
    00-index.tar style indices. See
    #4137.
  • Support for archives and repos in the packages section has
    been removed. Instead, you must use extra-deps for such
    dependencies. packages now only supports local filepaths.
  • Add support for Git repositories containing (recursive) submodules.
  • Addition of new configuration options for specifying a "pantry
    tree" key, which provides more reproducibility around builds,
    and (in the future) will be used for more efficient package
    content downloads. You can also specify package name and version
    for more efficient config parsing.
    * NOTE The new stack freeze command provides support
    for automatically generating this additional
    information.
  • Package contents and metadata are stored in an SQLite database
    in place of files on the filesystem. The pantry library can be
    used for interacting with these contents.
  • Internally, Stack has changed many datatypes, including moving
    to Cabal's definition of many data types. As a result of such
    changes, existing cache files will in general be invalidated,
    resulting in Stack needing to rebuild many previously cached
    builds in the new version. Sorry :(.
  • A new command, stack freeze has been added which outputs
    project and snapshot definitions with dependencies pinned to
    their exact versions.
  • The ignore-revision-mismatch setting is no longer needed, and
    has been removed.
  • Overriding GHC boot packages results in any other GHC boot
    packages depending on it being no longer available as a dependency,
    such packages need to be added explicitly when needed. See
    [#4510] (#4510).
  • Cabal solver integration was not updated to support newer
    cabal-install versions so stack solver command was removed as
    well as a related option --solver from stack new and
    stack init.
• Upgrade to Cabal 2.4
  • Note that, in this process, the behavior of file globbing has
    been modified to match that of Cabal. In particular, this means
    that for Cabal spec versions less than 2.4, *.txt will
    match foo.txt, but not foo.2.txt.
• Remove the stack image command. With the advent of Docker multistage
  builds, this functionality is no longer useful. For an example, please see
  Building Haskell Apps with
  Docker.
• Support building GHC from source (experimental)
  • Stack now supports building and installing GHC from source. The built GHC
    is uniquely identified by a commit id and an Hadrian "flavour" (Hadrian is
    the newer GHC build system), hence compiler can be set to use a GHC
    built from source with ghc-git-COMMIT-FLAVOUR
• stack.yaml now supports a configure-options, which are passed directly to
  the configure step in the Cabal build process. See
  #1438
• Remove support for building GHCJS itself. Future releases of Stack
  may remove GHCJS support entirely.
• Support for lock files for pinning exact project dependency versions

Behavior changes:

• stack.yaml now supports snapshot: a synonym for resolver. See
  #4256
• stack script now passes -i -idir in to the ghc
  invocation. This makes it so that the script can import local
  modules, and fixes an issue where .hs files in the current
  directory could affect interpretation of the script. See
  #4538
• When using stack script, custom snapshot files will be resolved
  relative to the directory containing the script.
• Remove the deprecated --upgrade-cabal flag to stack setup.
• Support the drop-packages field in stack.yaml
• Remove the GPG signing code during uploads. The GPG signatures have
  never been used yet, and there are no plans to implement signature
  verification.
• Remove the --plain option for the exec family of commands
• Always use the --exact-configuration Cabal configuration option when
  building (should mostly be a non-user-visible enhancement).
• No longer supports Cabal versions older than 1.19.2. This means
  projects using snapshots earlier than lts-3.0 or
  nightly-2015-05-05 will no longer build.
• Remove the stack docker cleanup command. Docker itself now has
  docker image prune
  and
  docker container prune,
  which you can use instead.
• Interleaved output is now turned on by default, see
  #4702. In
  addition, the packagename> prefix is no longer included in
  interelaved mode when only building a single target.
• The -fhide-source-paths GHC option is now enabled by default and
  can be disabled via the hide-source-paths configuration option in
  stack.yaml. See #3784
• Stack will reconfigure a package if you modify your PATH environment
  variable. See
  #3138.
• For GHC 8.4 and later, disable the "shadowed dependencies" workaround. This
  means that Stack will no longer have to force reconfigures as often. See
  #3554.
• When building a package, Stack takes a lock on the dist directory in
  use to avoid multiple runs of Stack from trampling each others'
  files. See
  #2730.
• Stack will check occassionally if there is a new version available and prompt
  the user to upgrade. This will not incur any additional network traffic, as
  it will piggy-back on the existing Hackage index updates. You can set
  recommend-stack-upgrade: false to bypass this. See
  #1681.
• stack list-dependencies has been removed in favour of stack ls dependencies.
• The new default for --docker-auto-pull is enabled. See
  #3332.

Other enhancements:

• Support MX Linux in get-stack.sh. Fixes
  #4769.
• Defer loading up of files for local packages. This allows us to get
  plan construction errors much faster, and avoid some unnecessary
  work when only building a subset of packages. This is especially
  useful for the curator use case.
• Existing global option --color=WHEN is now also available as a
  non-project-specific yaml configuration parameter color:.
• Adopt the standard proposed at http://no-color.org/, that color should not be
  added by default if the NO_COLOR environment variable is present.
• New command stack ls stack-colors lists the styles and the associated 'ANSI'
  control character sequences that stack uses to color some of its output. See
  stack ls stack-colors --help for more information.
• New global option --stack-colors=STYLES, also available as a
  non-project-specific yaml configuration parameter, allows a stack user to
  redefine the default styles that stack uses to color some of its output. See
  stack --help for more information.
• British English spelling of 'color' (colour) accepted as an alias for
  --color, --stack-colors, stack ls stack-colors at the command line and
  for color: and stack-colors: in yaml configuration files.
• New build option --ddump-dir. (See
  #4225)
• Stack parses and respects the preferred-versions information from
  Hackage for choosing latest version of a package in some cases,
  e.g. stack unpack packagename.
• The components output in the The main module to load is ambiguous message
  now include package names so they can be more easily copy-pasted.
• Git repos are shared across multiple projects. See
  #3551
• Use en_US.UTF-8 locale by default in pure Nix mode so programs won't
  crash because of Unicode in their output
  #4095
• Add --tree to ls dependencies to list dependencies as tree.
  #4101
• Add --pedantic to ghci to run with -Wall and -Werror
  #4463
• Add --cabal-files flag to stack ide targets command.
• Add --stdout flag to all stack ide sub...