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changelog.md

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This file contains a summary of changes to Haskell.nix and nix-tools that will impact users.

Jul 27, 2022

  • Removed reliance on builtins.currentSystem. It was used it to provide pkgs.evalPackages via an overlay that it used to run derivations used in imports from derivation (IFDs).

    These derivations are now run on buildPackages by default.

    Passsing evalPackages to a project function will change where all the derivations used in IFDs are run for that project (including shell tools): evalPackages = import nixpkgs haskellNix.nixpkgsArgs;

    Passing evalSystem instead will use create a suitable nixpkgs using pkgs.path and pkgs.overlay: evalSystem = "x86_64-linux"; or evalSystem = builtins.currentSystem;

    The haskellLib.cleanGit function is also affected by this change. If you are cross compiling and using cleanGit you should probably do something like: pkgs = import nixpkgs haskellNix.nixpkgsArgs; evalPackages = import nixpkgs (haskellNix.nixpkgsArgs // { system = evalSystem; }); p = pkgs.pkgsCross.mingwW64.haskell-nix.cabalProject { inherit evalPackages; src = evalPackages.haskell-nix.haskellLib.cleanGit { src = ./.; }; };

Feb 16, 2022

  • Removed lookupSha256 argument from project functions. Pass a sha256map instead.
  • Added better support for repository in cabal.project. These blocks should now work without the need for passing extra-hackages and extra-hackage-tarballs.

Aug 6, 2021

  • Included dependencies of haskell.nix that were tracked in nix/sources.json as flake inputs (flake.lock replaces nix/sources.json).
  • Uses flake-compat to continue to provide a compatible interface for non flake projects.

Jul 23, 2021

  • source-repository-package references in cabal.project files are now left as a source-repository-package when calculating the the plan-nix for cabalProject based functions. This makes haskell.nix match the behaviour of cabal better. Materialized files for projects that use source-repository-package references will need to be updated.
  • Only planned components are included in a haskell.nix cabal project. If cabal solver does not include the component in the plan.json file it will not be present in hsPkgs.pkg.components.
  • When the same package occurs more than once in a plan.json file the latest version is picked by haskell.nix.

Apr 8, 2021

  • Project arguments are now validated with the Nix module system. If unexpected argments are passed to a project function this may now result in an error.

Feb 22, 2021

  • Add .dwarf to build any component with DWARF dubug info on linux (ghc >=8.10.2).
  • Pass enableDWARF to shellFor for to get a shell where all the components are the .dwarf ones.

Feb 18, 2021

  • ghcOptions has been moved from package and is now a list of strings. old: packages.x.package.ghcOptions = "someGHCoption"; new: packages.x.ghcOptions = ["someGHCoption"]; To specify ghcOptions for all packages: ghcOptions = ["someGHCoption"]; For a single component: packages.x.compoents.library.ghcOptions = ["someGHCoption"];

Feb 8, 2021

  • Removed older versions of haskell-language-server from custom-tools (0.8.0 is in hackage so we can still get that version).

Jan 14, 2021

  • Added support for cross package refs (with a project). Relative directory references between packages within a project should now work.
  • Added includeSiblings to cleanSourceWith. When true it prevents the subDir arg from causing filtering of other directories.
  • Added keepGitDir to cleanGit to allow .git directory to be kept (useful for components that use the githash package).

Nov 26, 2020

  • Renamed otherShells arg for shellFor to `inputsFrom

Nov 25, 2020

  • The shellFor makeConfigFiles ghcWithHoogle and ghcWithPackages functions have been removed from project.hsPkgs. Instead access them from project itself (e.g. change p.hsPkgs.shellFor to p.shellFor).
  • The reflex-platform like project.shells.ghc has been removed. If needed, add something like p // { shells.ghc = p.shellFor {} } to shell.nix.

Nov 24, 2020

  • Added ${targetPrefix}cabal wrapper script for running cross compilers in shellFor.
  • otherShells arg added to shellFor.

Oct 31, 2020

  • Passing tools.hoogle to shellFor with a value suitable for haskel-nix.tool will use the specified hoogle inside shellFor. This allows for materialization of hoogle.

Oct 28, 2020

  • Passing compiler-nix-name to project functions for stack.yaml based projects now overrides the compiler used (was ignored before).

Sep 8, 2020

  • Added the ability to generate coverage reports for packages and projects.
  • Added the doCoverage module option that allows users to choose packages to enable coverage for.
  • Added a doCoverage flag to the component builder that outputs HPC information when coverage is enabled.
  • Added test for coverage.

July 21, 2020

  • Removed components.all, use symlinkJoin on components.exes or shellFor if you need a shell.
  • Added components argument to shellFor.

July 21, 2020

  • Added GHC 8.8.4 and replaced 8.8.3 in tests and as the ghc used to build nix-tools for stack projects.

July 20, 2020

  • Changed haskell-nix.roots and p.roots to single derivations.

July 8, 2020

  • Removed sources.nixpkgs-default, use sources.nixpkgs instead.
  • Removed ./nixpkgs directory, use (import ./. {}).sources or ./nix/sources.nix instead.
  • Removes V1 interface for details on how to fix old code see: input-output-hk#709
  • Removed defaultCompilerNixName.
  • cabalProject, cabalProject', hackage-project and hackage-package now require a compiler-nix-name argument.
  • haskell-nix.tool and .tools now require a compiler-nix-name argument. New functions p.tool and p.tools (where p is a project) do not. Like shellFor { tools = ... } they will use the compiler nix name from the project (including stack projects where it is derived from the resolver).
  • haskell-nix.alex and haskell-nix.happy have been removed. Use p.tool "alex" "3.2.5" or shellFor { tools = { alex = "3.2.5"; } }.
  • haskell-nix.nix-tools -> haskell-nix.nix-tools.ghc883 (it includes the hpack exe now).
  • haskell-nix.cabal-install -> p.tool "cabal" "3.2.0.0" or shellFor { tools = { cabal = "3.2.0.0"; } }
  • haskell-nix.haskellNixRoots -> haskell-nix.roots ghc883 or p.roots

June 25, 2020

  • Haddock docs are now built in their own derivation when needed (not as part of the component build). They should build automatically when something (such as shellFor) attempts to accesses the .doc attribute of component.

December 27, 2019

  • Fix overlays/bootstrap.nix to provide LLVM 6, not LLVM 5, to ghc-8.6.X compilers.

November 18, 2019

  • Changed the cleanSourceHaskell to accept an attrset of src and (optional) name parameters. This allows you to keep the source derivation name constant, so that your builds are always cached. Usage of cleanSourceHaskell will need to be updated.

October 12, 2019

  • shellFor no longer sets CABAL_CONFIG by default. This avoids surprising users, but means that Cabal may select a plan which is different to your Haskell.nix package set. If you would like the old behaviour, use shellFor { exactDeps = true; }.

August 9, 2019

June 21, 2019

  • Add ghcWithPackages and ghcWithHoogle to hsPkgs (documentation.
  • Benchmark components can now build successfully.
  • Reduced the closure bloat of nix-tools, and added closure size limit to CI.
  • Added more reference documentation and set up auto-generated documentation for Module Options.
  • Miscellaneous bug fixes.

June 7, 2019

  • Several additions to the documentation.
    • More information about getting nix-tools, Haskell.nix, pinning.
    • Updates the stack-to-nix and cabal-to-nix guides.
    • Adds a section on development environments.
    • Adds a little information about cross compilation.
    • Adds a (partially complete) reference section (command line manuals, library reference).
    • Symlinks the changelog into the documentation pages.

May 29, 2019

  • Added shellFor function to package set.

May 28, 2019

  • Added snaphots and haskellPackages attributes to the Haskell.nix top-level.

May 22, 2019

  • Add the cleanSourceHaskell utility function to the Haskell.nix top-level.

May 21, 2019

  • Add the callCabalProjectToNix function, which uses "import from derivation" (IFD) so that nix-tools doesn't need to be run manually.
  • The hackage.nix update process has changed, so that Cabal index state hashes are also included in the generated repo.

May 20, 2019

  • Remove Travis CI in favour of Buildkite.

May 17, 2019

  • Add the callStackToNix function, which uses "import from derivation" (IFD) so that stack-to-nix doesn't need to be run manually.

Mar 15, 2019

  • overlays was renamed to extras in #79 to prevent confusion between the notion of Nix overlays.

    Therefore plan-pkgs and stack-pkgs as generated by plan-to-nix and stack-to-nix will expose extras instead of overlay. Similarly mkStackPkgSet, mkPkgSet and mkCabalProjectPkgSet take a pkg-def-extras instead of pkg-def-overlay argument. If you are using iohk-nix, the iohk-overlay was parameter was renamed to iohk-extras.