CHANGELOG.md

4.0.1

• Download .cabal file revisions from the public Casa instance instead of Hackage.

  We believe this change shouldn't affect any end users, but we now depend on https://casa.stackage.org instead of Hackage. If Casa ends up having signficantly worse uptime than Hackage, then users may be affected when trying to use stacklock2nix. Please let us know if this ends up affecting you.

  Added in #42. Thanks @TeofilC!

4.0.0

• Make sure the psqueues Haskell package gets the fingertree-psqueue dep depending on what version of psqueues you're compiling.

  Added in #39.

• Change stacklock2nix's handling of Stack's git dependencies.

  A git dependency looks like the following in stack.yaml:

  extra-deps:
    - git: "https://github.com/haskell-servant/servant-cassava"
      commit: "f76308b42b9f93a6641c70847cec8ecafbad3abc"

  Up until now, stacklock2nix would download Stack's git dependencies using Nix's builtins.fetchGit function.

  By default, this function doesn't clone the full repository, but only the history of the default branch. This is a problem if you try to specify a commit that is not a parent of the default branch. This may happen if you're developing new functionality in a feature branch that hasn't yet been merged into master.

  stacklock2nix has been changed to additionally specify the allRefs = true argument to builtins.fetchGit. This causes the full Git repository to be downloaded, even commits that aren't ancestors of the default branch.

  Added in #39. Thanks to @isomorpheme for reporting this and coming up with the fix.

  It is possible this causes increased download times, especially for repos that are very big.

  You may be able to work around this by using Stack's functionality for downloading given URLs, in order to download a tarball of a repository (without any of the Git history).:

  extra-deps:
    - url: "https://github.com/haskell-servant/servant-cassava/archive/f76308b42b9f93a6641c70847cec8ecafbad3abc.tar.gz"

3.0.5

• Make sure the digest Haskell package gets the system zlib as an argument.

  Added in #35.

3.0.4

• Remove dontCheck override for haskeline in nix/build-support/stacklock2nix/suggestedOverlay.nix. haskeline is a GHC boot package, so it is not built as a separate Nix derivation. It is distributed with GHC, so it is set to null in the Nixpkgs pkg set.

3.0.3

• A few additional overrides added to nix/build-support/stacklock2nix/suggestedOverlay.nix to fix some breakages in test suites caused by QuickCheck-2.14.3. QuickCheck-2.14.3 is included in LTS-20.24, so you'll likely need these fixes if you are using LTS-20.24 or later.

  Added in #31.

3.0.2

• Fix override with splitmix argument, testu01.

  Added in #28.

• A few additional overrides added to nix/build-support/stacklock2nix/suggestedOverlay.nix to fix some common problems on Darwin.

  Added in #28.

3.0.1

• Fix override with unordered-containers argument, nothunks.

  Added in #26.

3.0.0

• Add some additional filters to the default localPkgFilter argument.

  Now most files from Haskell.gitignore are filtered out by default.

  While this is technically a breaking change, this shouldn't negatively affect most users.

  Added in #24.

2.0.1

• Fixes a bug in the implementation of the new localPkgFilter argument added in v2.0.0. This bug is not a correctness problem (so if you accidentally use v2.0.0, you should not get incorrectly built Haskell packages). The bug is just that files will get pulled into the Nix store that you may expect to be filtered out.

  See #23 for the details.

2.0.0

• (WARNING: There is a bug in the implementation of this new localPkgFilter feature. You are recommended to use v2.0.1 instead of v2.0.0!)

  Add a localPkgFilter argument to stacklock2nix. This can be used to filter the sources of local Haskell packages.

  Here's an example of how you might use it:

  stacklock2nix {
    stackYaml = ./stack.yaml;
    localPkgFilter = defaultLocalPkgFilter: pkgName: path: type:
      if pkgName == "my-example-haskell-lib" && baseNameOf path == "extra-file" then
        false
      else
        defaultLocalPkgFilter path type;
  }

  This is an example of filtering out a file called extra-file from the input source of the Haskell package my-example-haskell-lib.

  This is a major version bump because if you don't specify the localPkgFilter argument to stacklock2nix, it defaults to using a filter that filters out the .stack-work/ directory, as well as directories like dist-newstyle. It also passes input files through the lib.cleanSourceFilter function, which filters out .git/, as well as a few other types of files.

  While this is technically a major version bump, most users won't be negatively affected by this change. It is quite likely this won't affect most people.

  Added in #22.

1.3.0

• Add all-cabal-hashes as an output from stacklock2nix. This can be used as in the "advanced" example:

  final: prev: {
    my-example-haskell-stacklock = final.stacklock2nix {
      stackYaml = ../stack.yaml;
      all-cabal-hashes = final.fetchFromGitHub {
        owner = "commercialhaskell";
        repo = "all-cabal-hashes";
        rev = "9ab160f48cb535719783bc43c0fbf33e6d52fa99";
        sha256 = "sha256-Hz/xaCoxe4cJBH3h/KIfjzsrEyD915YEVEK8HFR7nO4=";
      };
    };
  
    my-example-haskell-pkg-set = final.haskell.packages.ghc924.override (oldAttrs: {
      inherit (final.my-example-haskell-stacklock) all-cabal-hashes;
      ...

  Added in #19.

1.2.0

• Make sure that stacklock2nix will work if the input all-cabal-hashes argument is a directory (instead of a tarball).

  Passing all-cabal-hashes as a directory will make the initial build process a little faster (although shouldn't affect future rebuilds).

  You can easily pass all-cabal-hashes as a directory by pulling it down with fetchFromGitHub like the following:

  final: prev: {
    my-stacklock2nix-proj = final.stacklock2nix {
      stackYaml = ./stack.yaml;
  
      ...
  
      all-cabal-hashes = final.fetchFromGitHub {
        owner = "commercialhaskell";
        repo = "all-cabal-hashes";
        rev = "9ab160f48cb535719783bc43c0fbf33e6d52fa99";
        sha256 = "sha256-Hz/xaCoxe4cJBH3h/KIfjzsrEyD915YEVEK8HFR7nO4=";
      };
    };
  }

  Implemented in #15, #16, and #17.

1.1.0

• Added two new attributes to the attribute set returned from a call to stacklock2nix: newPkgSet and newPkgSetDevShell. These two values are similar to the existing pkgSet and devShell attributes. Whereas pkgSet and devShell take the baseHaskellPkgSet argument and overlay it with package overrides created from your stack.yaml file, newPkgSet and newPkgSetDevShell are a completely new package set, containing only packages from your stack.yaml.

  The effect of this is that pkgSet will contain packages that are in Nixpkgs, but not in Stackage. For instance, when using pkgSet, you should be able to access the package pkgSet.termonad because it is available on Hackage (and in Nixpkgs), even though it is not in any Stackage resolver.

  However, newPkgSet will only contain packages in your stack.yaml file. For instance, you'll never be able to access newPkgSet.termonad or newPkgSet.spago, because they will likely never be available on Stackage.

  In general, in your own projects, should you use pkgSet or newPkgSet?

  For building your own projects, most of the time pkgSet and newPkgSet should be similar. newPkgSet may be slightly safer, since there is almost no chance you accidentally use a Haskell package outside of your stack.yaml. pkgSet may be slightly more convenient depending on what you're trying to do.

1.0.0

• This is the 1.0 release of stacklock2nix. I've tested stacklock2nix on building a few real-world Haskell projects, and it has worked well. stacklock2nix is ready to be widely used.

• There have been a some overrides added to nix/build-support/stacklock2nix/suggestedOverlay.nix since the 0.2.0 release, but no API changes to stacklock2nix itself. This would normally be a patch-release (to 0.2.1), but I instead wanted to release version 1.0.

0.2.0

• Add a callPackage argument to stacklock2nix so that users can easily statically-compile Haskell packages.

  This could be used like the following:

  my-haskell-stacklock = final.stacklock2nix {
    stackYaml = ./stack.yaml;
    baseHaskellPkgSet = final.pkgsStatic.haskell.packages.ghc924;
    callPackage = final.pkgsStatic.callPackage;
    ...
  };

  #2

• Make sure github types of extra-deps in stack.yaml are handled correctly. Previous version did not handle github deps correctly when they had no subdirs.

  extra-deps in stack.yaml like the following will now work:

  extra-deps:
    - github: "cdepillabout/pretty-simple"
      commit: "d8ef1b3c2d913a05515b2d1c4fec0b52d2744434"

  Thanks @TeofilC! #6

0.1.0

• Initial release.