/nix/store/5q5s4a07gaz50h04zpfbda8xjs8wrnhg-ghc-9.6.3
  ```

  If that happens, first disable the check for GHC references and rebuild the
  derivation:

  ```nix
  pkgs.haskell.lib.overrideCabal (pkgs.haskell.lib.justStaticExecutables my-haskell-package) (drv: {
    disallowGhcReference = false;
  })
  ```

  Then use `strings` to determine which libraries are responsible:

  ```
  $ nix-build ...
  $ strings result/bin/my-haskell-binary | grep /nix/store/
  ...
  /nix/store/n7ciwdlg8yyxdhbrgd6yc2d8ypnwpmgq-hs-opentelemetry-sdk-0.0.3.6/bin
  ...
  ```

  Finally, use `remove-references-to` to delete those store paths from the produced output:

  ```nix
  pkgs.haskell.lib.overrideCabal (pkgs.haskell.lib.justStaticExecutables my-haskell-package) (drv: {
    postInstall = ''
      ${drv.postInstall or ""}
      remove-references-to -t ${pkgs.haskellPackages.hs-opentelemetry-sdk}
    '';
  })
  ```


`enableSeparateBinOutput drv`
: Install executables produced by `drv` to a separate `bin` output. This
has a similar effect as `justStaticExecutables`, but preserves the libraries
and documentation in the `out` output alongside the `bin` output with a
much smaller closure size.

`markBroken drv`
: Sets the `broken` flag to `true` for `drv`.

`markUnbroken drv`, `unmarkBroken drv`
: Set the `broken` flag to `false` for `drv`.

`doDistribute drv`
: Updates `hydraPlatforms` so that Hydra will build `drv`. This is
sometimes necessary when working with versioned packages in
`haskellPackages` which are not built by default.

`dontDistribute drv`
: Sets `hydraPlatforms` to `[]`, causing Hydra to skip this package
altogether. Useful if it fails to evaluate cleanly and is causing
noise in the evaluation errors tab on Hydra.

##### Development Helpers {#haskell-development-helpers}

`sdistTarball drv`
: Create a source distribution tarball like those found on Hackage
instead of building the package `drv`.

`documentationTarball drv`
: Create a documentation tarball suitable for uploading to Hackage
instead of building the package `drv`.

`buildFromSdist drv`
: Uses `sdistTarball drv` as the source to compile `drv`. This helps to catch
packaging bugs when building from a local directory, e.g. when required files
are missing from `extra-source-files`.

`failOnAllWarnings drv`
: Enables all warnings GHC supports and makes it fail the build if any of them
are emitted.

<!-- TODO(@sternenseemann):
`checkUnusedPackages opts drv`
: Adds an extra check to `postBuild` which fails the build if any dependency
taken as an input is not used. The `opts` attribute set allows relaxing this
check.
-->

`enableDWARFDebugging drv`
: Compiles the package with additional debug symbols enabled, useful
for debugging with e.g. `gdb`.

`doStrip drv`
: Sets `doStrip` to `true` for `drv`.

`dontStrip drv`
: Sets `doStrip` to `false` for `drv`.

<!-- TODO(@sternenseemann): shellAware -->

##### Trivial Helpers {#haskell-trivial-helpers}

`doJailbreak drv`
: Sets the `jailbreak` argument to `true` for `drv`.

`dontJailbreak drv`
: Sets the `jailbreak` argument to `false` for `drv`.

`doHaddock drv`
: Sets `doHaddock` to `true` for `drv`.

`dontHaddock drv`
: Sets `doHaddock` to `false` for `drv`. Useful if the build of a package is
failing because of e.g. a syntax error in the Haddock documentation.

`doHyperlinkSource drv`
: Sets `hyperlinkSource` to `true` for `drv`.

`dontHyperlinkSource drv`
: Sets `hyperlinkSource` to `false` for `drv`.

`doCheck drv`
: Sets `doCheck` to `true` for `drv`.

`dontCheck drv`
: Sets `doCheck` to `false` for `drv`. Useful if a package has a broken,
flaky or otherwise problematic test suite breaking the build.

`dontCheckIf condition drv`
: Sets `doCheck` to `false` for `drv`, but only if `condition` applies.
Otherwise it's a no-op. Useful to conditionally disable tests for a package
without interfering with previous overrides or default values.

<!-- Purposefully omitting the non-list variants here. They are a bit
ugly, and we may want to deprecate them at some point. -->