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nixpkgs/pkgs/top-level/dhall-packages.nix

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Add Nixpkgs support for Dhall One of the motivations for this change is the following Discourse discussion: https://discourse.dhall-lang.org/t/offline-use-of-prelude/137 Many users have requested Dhall support for "offline" packages that can be fetched/built/installed using ordinary package management tools (like Nix) instead of using Dhall's HTTP import system. I will continue to use the term "offline" to mean Dhall package builds that do not use Dhall's language support for HTTP imports (and instead use the package manager's support for HTTP requests, such as `pkgs.fetchFromGitHub`) The goal of this change is to document what is the idiomatic way to implement "offline" Dhall builds by implementing Nixpkgs support for such builds. That way when other package management tools ask me how to package Dhall with their tools I can refer them to how it is done in Nixpkgs. This change contains a fully "offline" build for the largest Dhall package in existence, known as "dhall-packages" (not to be confused with `dhallPackages`, which is our Nix attribute set containing Dhall packages). The trick to implementing offline builds in Dhall is to take advantage of Dhall's support for semantic integrity checks. If an HTTP import is protected by an integrity check and a cached build product matches the integrity check then the HTTP import is never resolved and the expression is instead fetched from cache. By "installing" dependencies in a pre-seeded and isolated cache we can replace remote HTTP imports with dependencies that have been built and supplied by Nix instead. The offline nature of the builds are enforced by compiling the Haskell interpreter with the `-f-with-http` flag, which disables the interpreter's support for HTTP imports. If a user forgets to supply a necessary dependency as a Nix build product then the build fails informing them that HTTP imports are disabled. By default, built packages are "binary distributions", containing just a cache product and a Dhall expression which can be used to resolve the corresponding cache product. Users can also optionally enable a "source distribution" of a package which already includes the equivalent fully-evaluated Dhall code (for convenience), but this is disabled by default to keep `/nix/store` utilization as compact as possible.
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{ lib
, newScope
, overrides ? (self: super: {})
}:
let
packages = self:
let
callPackage = newScope self;
buildDhallPackage =
callPackage ../development/interpreters/dhall/build-dhall-package.nix { };
Nixpkgs support for `dhall-to-nixpkgs` The motivation for this change is to enable a new Dhall command-line utility called `dhall-to-nixpkgs` which converts Dhall packages to buildable Nix packages. You can think of `dhall-to-nixpkgs` as the Dhall analog of `cabal2nix`. You can find the matching pull request for `dhall-to-nixpkgs` here: https://github.com/dhall-lang/dhall-haskell/pull/1826 The two main changes required to support `dhall-to-nixpkgs` are: * Two new `buildDhall{Directory,GitHub}Package` utilities are added `dhall-to-nixpkgs` uses these in the generated output * `pkgs.dhallPackages` now selects a default version for each package using the `prefer` utility All other versions are still buildable via a `passthru` attribute
2020-05-10 04:16:06 +02:00
buildDhallGitHubPackage =
callPackage ../development/interpreters/dhall/build-dhall-github-package.nix { };
buildDhallDirectoryPackage =
callPackage ../development/interpreters/dhall/build-dhall-directory-package.nix { };
dhallPackages.buildDhallUrl: add this function `buildDhallUrl` is a function to download a Dhall remote import. It is introduced to `dhall-to-nixpkgs` in https://github.com/dhall-lang/dhall-haskell/pull/2318.
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buildDhallUrl =
callPackage ../development/interpreters/dhall/build-dhall-url.nix { };
dhallPackages.generateDhallDirectoryPackage: init
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generateDhallDirectoryPackage =
callPackage ../development/interpreters/dhall/generate-dhall-directory-package.nix { };
Add Nixpkgs support for Dhall One of the motivations for this change is the following Discourse discussion: https://discourse.dhall-lang.org/t/offline-use-of-prelude/137 Many users have requested Dhall support for "offline" packages that can be fetched/built/installed using ordinary package management tools (like Nix) instead of using Dhall's HTTP import system. I will continue to use the term "offline" to mean Dhall package builds that do not use Dhall's language support for HTTP imports (and instead use the package manager's support for HTTP requests, such as `pkgs.fetchFromGitHub`) The goal of this change is to document what is the idiomatic way to implement "offline" Dhall builds by implementing Nixpkgs support for such builds. That way when other package management tools ask me how to package Dhall with their tools I can refer them to how it is done in Nixpkgs. This change contains a fully "offline" build for the largest Dhall package in existence, known as "dhall-packages" (not to be confused with `dhallPackages`, which is our Nix attribute set containing Dhall packages). The trick to implementing offline builds in Dhall is to take advantage of Dhall's support for semantic integrity checks. If an HTTP import is protected by an integrity check and a cached build product matches the integrity check then the HTTP import is never resolved and the expression is instead fetched from cache. By "installing" dependencies in a pre-seeded and isolated cache we can replace remote HTTP imports with dependencies that have been built and supplied by Nix instead. The offline nature of the builds are enforced by compiling the Haskell interpreter with the `-f-with-http` flag, which disables the interpreter's support for HTTP imports. If a user forgets to supply a necessary dependency as a Nix build product then the build fails informing them that HTTP imports are disabled. By default, built packages are "binary distributions", containing just a cache product and a Dhall expression which can be used to resolve the corresponding cache product. Users can also optionally enable a "source distribution" of a package which already includes the equivalent fully-evaluated Dhall code (for convenience), but this is disabled by default to keep `/nix/store` utilization as compact as possible.
2020-02-12 07:02:53 +01:00
in
Nixpkgs support for `dhall-to-nixpkgs` The motivation for this change is to enable a new Dhall command-line utility called `dhall-to-nixpkgs` which converts Dhall packages to buildable Nix packages. You can think of `dhall-to-nixpkgs` as the Dhall analog of `cabal2nix`. You can find the matching pull request for `dhall-to-nixpkgs` here: https://github.com/dhall-lang/dhall-haskell/pull/1826 The two main changes required to support `dhall-to-nixpkgs` are: * Two new `buildDhall{Directory,GitHub}Package` utilities are added `dhall-to-nixpkgs` uses these in the generated output * `pkgs.dhallPackages` now selects a default version for each package using the `prefer` utility All other versions are still buildable via a `passthru` attribute
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{ inherit
Fix support for extending Dhall package set * Fix `dhallPackages` to be defined using `callPackage` instead of `callPackages` This enables the `pkgs.dhallPackages.override` method * Export `pkgs.dhallPackages.callPackage` This is also necessary in order to easily extend `pkgs.dhallPackages` with new packages
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callPackage
Nixpkgs support for `dhall-to-nixpkgs` The motivation for this change is to enable a new Dhall command-line utility called `dhall-to-nixpkgs` which converts Dhall packages to buildable Nix packages. You can think of `dhall-to-nixpkgs` as the Dhall analog of `cabal2nix`. You can find the matching pull request for `dhall-to-nixpkgs` here: https://github.com/dhall-lang/dhall-haskell/pull/1826 The two main changes required to support `dhall-to-nixpkgs` are: * Two new `buildDhall{Directory,GitHub}Package` utilities are added `dhall-to-nixpkgs` uses these in the generated output * `pkgs.dhallPackages` now selects a default version for each package using the `prefer` utility All other versions are still buildable via a `passthru` attribute
2020-05-10 04:16:06 +02:00
buildDhallPackage
buildDhallGitHubPackage
buildDhallDirectoryPackage
dhallPackages.buildDhallUrl: add this function `buildDhallUrl` is a function to download a Dhall remote import. It is introduced to `dhall-to-nixpkgs` in https://github.com/dhall-lang/dhall-haskell/pull/2318.
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buildDhallUrl
dhallPackages.generateDhallDirectoryPackage: init
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generateDhallDirectoryPackage
Nixpkgs support for `dhall-to-nixpkgs` The motivation for this change is to enable a new Dhall command-line utility called `dhall-to-nixpkgs` which converts Dhall packages to buildable Nix packages. You can think of `dhall-to-nixpkgs` as the Dhall analog of `cabal2nix`. You can find the matching pull request for `dhall-to-nixpkgs` here: https://github.com/dhall-lang/dhall-haskell/pull/1826 The two main changes required to support `dhall-to-nixpkgs` are: * Two new `buildDhall{Directory,GitHub}Package` utilities are added `dhall-to-nixpkgs` uses these in the generated output * `pkgs.dhallPackages` now selects a default version for each package using the `prefer` utility All other versions are still buildable via a `passthru` attribute
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;
Add Nixpkgs support for Dhall One of the motivations for this change is the following Discourse discussion: https://discourse.dhall-lang.org/t/offline-use-of-prelude/137 Many users have requested Dhall support for "offline" packages that can be fetched/built/installed using ordinary package management tools (like Nix) instead of using Dhall's HTTP import system. I will continue to use the term "offline" to mean Dhall package builds that do not use Dhall's language support for HTTP imports (and instead use the package manager's support for HTTP requests, such as `pkgs.fetchFromGitHub`) The goal of this change is to document what is the idiomatic way to implement "offline" Dhall builds by implementing Nixpkgs support for such builds. That way when other package management tools ask me how to package Dhall with their tools I can refer them to how it is done in Nixpkgs. This change contains a fully "offline" build for the largest Dhall package in existence, known as "dhall-packages" (not to be confused with `dhallPackages`, which is our Nix attribute set containing Dhall packages). The trick to implementing offline builds in Dhall is to take advantage of Dhall's support for semantic integrity checks. If an HTTP import is protected by an integrity check and a cached build product matches the integrity check then the HTTP import is never resolved and the expression is instead fetched from cache. By "installing" dependencies in a pre-seeded and isolated cache we can replace remote HTTP imports with dependencies that have been built and supplied by Nix instead. The offline nature of the builds are enforced by compiling the Haskell interpreter with the `-f-with-http` flag, which disables the interpreter's support for HTTP imports. If a user forgets to supply a necessary dependency as a Nix build product then the build fails informing them that HTTP imports are disabled. By default, built packages are "binary distributions", containing just a cache product and a Dhall expression which can be used to resolve the corresponding cache product. Users can also optionally enable a "source distribution" of a package which already includes the equivalent fully-evaluated Dhall code (for convenience), but this is disabled by default to keep `/nix/store` utilization as compact as possible.
2020-02-12 07:02:53 +01:00
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.
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lib = import ../development/dhall-modules/lib.nix { inherit lib; };
dhallPackages.dhall-cloudformation: init at 0.9.64 (#183813)
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dhall-cloudformation = callPackage ../development/dhall-modules/dhall-cloudformation.nix { };
dhall-grafana: init at 0.1. (#144826)
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dhall-grafana =
callPackage ../development/dhall-modules/dhall-grafana.nix { };
Add Nixpkgs support for Dhall One of the motivations for this change is the following Discourse discussion: https://discourse.dhall-lang.org/t/offline-use-of-prelude/137 Many users have requested Dhall support for "offline" packages that can be fetched/built/installed using ordinary package management tools (like Nix) instead of using Dhall's HTTP import system. I will continue to use the term "offline" to mean Dhall package builds that do not use Dhall's language support for HTTP imports (and instead use the package manager's support for HTTP requests, such as `pkgs.fetchFromGitHub`) The goal of this change is to document what is the idiomatic way to implement "offline" Dhall builds by implementing Nixpkgs support for such builds. That way when other package management tools ask me how to package Dhall with their tools I can refer them to how it is done in Nixpkgs. This change contains a fully "offline" build for the largest Dhall package in existence, known as "dhall-packages" (not to be confused with `dhallPackages`, which is our Nix attribute set containing Dhall packages). The trick to implementing offline builds in Dhall is to take advantage of Dhall's support for semantic integrity checks. If an HTTP import is protected by an integrity check and a cached build product matches the integrity check then the HTTP import is never resolved and the expression is instead fetched from cache. By "installing" dependencies in a pre-seeded and isolated cache we can replace remote HTTP imports with dependencies that have been built and supplied by Nix instead. The offline nature of the builds are enforced by compiling the Haskell interpreter with the `-f-with-http` flag, which disables the interpreter's support for HTTP imports. If a user forgets to supply a necessary dependency as a Nix build product then the build fails informing them that HTTP imports are disabled. By default, built packages are "binary distributions", containing just a cache product and a Dhall expression which can be used to resolve the corresponding cache product. Users can also optionally enable a "source distribution" of a package which already includes the equivalent fully-evaluated Dhall code (for convenience), but this is disabled by default to keep `/nix/store` utilization as compact as possible.
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dhall-kubernetes =
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.
2020-11-01 21:26:33 +01:00
callPackage ../development/dhall-modules/dhall-kubernetes.nix { };
Add Nixpkgs support for Dhall One of the motivations for this change is the following Discourse discussion: https://discourse.dhall-lang.org/t/offline-use-of-prelude/137 Many users have requested Dhall support for "offline" packages that can be fetched/built/installed using ordinary package management tools (like Nix) instead of using Dhall's HTTP import system. I will continue to use the term "offline" to mean Dhall package builds that do not use Dhall's language support for HTTP imports (and instead use the package manager's support for HTTP requests, such as `pkgs.fetchFromGitHub`) The goal of this change is to document what is the idiomatic way to implement "offline" Dhall builds by implementing Nixpkgs support for such builds. That way when other package management tools ask me how to package Dhall with their tools I can refer them to how it is done in Nixpkgs. This change contains a fully "offline" build for the largest Dhall package in existence, known as "dhall-packages" (not to be confused with `dhallPackages`, which is our Nix attribute set containing Dhall packages). The trick to implementing offline builds in Dhall is to take advantage of Dhall's support for semantic integrity checks. If an HTTP import is protected by an integrity check and a cached build product matches the integrity check then the HTTP import is never resolved and the expression is instead fetched from cache. By "installing" dependencies in a pre-seeded and isolated cache we can replace remote HTTP imports with dependencies that have been built and supplied by Nix instead. The offline nature of the builds are enforced by compiling the Haskell interpreter with the `-f-with-http` flag, which disables the interpreter's support for HTTP imports. If a user forgets to supply a necessary dependency as a Nix build product then the build fails informing them that HTTP imports are disabled. By default, built packages are "binary distributions", containing just a cache product and a Dhall expression which can be used to resolve the corresponding cache product. Users can also optionally enable a "source distribution" of a package which already includes the equivalent fully-evaluated Dhall code (for convenience), but this is disabled by default to keep `/nix/store` utilization as compact as possible.
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Prelude =
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.
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callPackage ../development/dhall-modules/Prelude.nix { };
Add Nixpkgs support for Dhall One of the motivations for this change is the following Discourse discussion: https://discourse.dhall-lang.org/t/offline-use-of-prelude/137 Many users have requested Dhall support for "offline" packages that can be fetched/built/installed using ordinary package management tools (like Nix) instead of using Dhall's HTTP import system. I will continue to use the term "offline" to mean Dhall package builds that do not use Dhall's language support for HTTP imports (and instead use the package manager's support for HTTP requests, such as `pkgs.fetchFromGitHub`) The goal of this change is to document what is the idiomatic way to implement "offline" Dhall builds by implementing Nixpkgs support for such builds. That way when other package management tools ask me how to package Dhall with their tools I can refer them to how it is done in Nixpkgs. This change contains a fully "offline" build for the largest Dhall package in existence, known as "dhall-packages" (not to be confused with `dhallPackages`, which is our Nix attribute set containing Dhall packages). The trick to implementing offline builds in Dhall is to take advantage of Dhall's support for semantic integrity checks. If an HTTP import is protected by an integrity check and a cached build product matches the integrity check then the HTTP import is never resolved and the expression is instead fetched from cache. By "installing" dependencies in a pre-seeded and isolated cache we can replace remote HTTP imports with dependencies that have been built and supplied by Nix instead. The offline nature of the builds are enforced by compiling the Haskell interpreter with the `-f-with-http` flag, which disables the interpreter's support for HTTP imports. If a user forgets to supply a necessary dependency as a Nix build product then the build fails informing them that HTTP imports are disabled. By default, built packages are "binary distributions", containing just a cache product and a Dhall expression which can be used to resolve the corresponding cache product. Users can also optionally enable a "source distribution" of a package which already includes the equivalent fully-evaluated Dhall code (for convenience), but this is disabled by default to keep `/nix/store` utilization as compact as possible.
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};
in
lib.fix' (lib.extends overrides packages)
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