Gabriel Gonzalez 87d5e6fc1a Change idiom for overriding Dhall package version ... Before this change, a Dhall package like the Prelude would be encoded as a record with one field per supported version. Then downstream packages would specify which package to override by selecting a different record field. The problem with that approach is that it did not provide an easy way to override a package to a version other than the default ones supplied by Nixpkgs. Normally you would use the `.override` method for this purpose, but the `override` method added by `buildDhall{Directory,GitHub}Package` is clobbered by the `override` method added by `callPackage` in `./pkgs/top-level/dhall-packages.nix`. The solution is to add a separate `.overridePackage` method which is essentially the exact same as `.override`, except that it is no longer clobbered by `callPackage`. This `.overridePackage` method allows one to override the arguments supplied to `buildDhall{Directory,GitHub}Package`, making it easier to specify package versions outside of the ones supported by Nixpkgs.. This also includes a change to only build one (preferred) version of each package (instead of multiple supported versions per package), in order to minimize the maintenance burden for the Dhall package set.		2020-11-11 11:16:04 +01:00
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build-dhall-directory-package.nix	Change idiom for overriding Dhall package version	2020-11-11 11:16:04 +01:00
build-dhall-github-package.nix	Change idiom for overriding Dhall package version	2020-11-11 11:16:04 +01:00
build-dhall-package.nix