NorfairKing/feedback
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Nix flake

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Tom Sydney Kerckhove 2022-10-21 10:12:23 +02:00
parent 38ae15aa6f
commit ad6c768ee4
19 changed files with 395 additions and 550 deletions
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74
.github/workflows/nix-build.yml vendored
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@ -2,55 +2,35 @@ name: "Nix Build"
on:
pull_request:
push:
branches:
- development
- master
branches: [development, master]
jobs:
hooks:
runs-on: ubuntu-latest
build:
name: ${{ matrix.attribute }} / ${{ matrix.os }}
runs-on: ${{ matrix.os }}
strategy:
fail-fast: false
matrix:
os:
- ubuntu-latest
attribute:
- .#devShells.x86_64-linux.default
- .#packages.x86_64-linux.default
- .#checks.x86_64-linux.pre-commit
steps:
- uses: actions/checkout@v3.0.2
- uses: cachix/install-nix-action@v17
- uses: cachix/cachix-action@v10
- uses: actions/checkout@v2.5.0
- uses: cachix/install-nix-action@v18
with:
extra_nix_config: |
access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
- name: free disk space
run: |
if [[ "${{matrix.os}}" == "ubuntu-latest" ]]
then
sudo rm -rf /opt
fi
- uses: cachix/cachix-action@v11
with:
name: feedback
extraPullNames: validity,sydtest,autodocodec
extraPullNames: validity,safe-coloured-text,sydtest,autodocodec
signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
- run: nix-build ci.nix -A pre-commit-check
shell:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3.0.2
- uses: cachix/install-nix-action@v17
- uses: cachix/cachix-action@v10
with:
name: feedback
extraPullNames: validity,sydtest,autodocodec
signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
- run: nix-build ci.nix -A shell
hoogle:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3.0.2
- uses: cachix/install-nix-action@v17
- uses: cachix/cachix-action@v10
with:
name: feedback
extraPullNames: validity,sydtest,autodocodec
signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
- run: nix-build ci.nix -A hoogle
tests:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3.0.2
- uses: cachix/install-nix-action@v17
- uses: cachix/cachix-action@v10
with:
name: feedback
extraPullNames: validity,sydtest,autodocodec
signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
- run: nix-build ci.nix -A release
- run: nix build "${{matrix.attribute}}"

1
.gitignore vendored
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@ -3,3 +3,4 @@ stack.yaml.lock
result*
.pre-commit-config.yaml
.direnv/
dist-newstyle/

68
README.md
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@ -11,23 +11,26 @@ Use the `feedback` command to set up a feedback loop for your work.
For example, if you are working on a nix build, you might use this feedback loop:
```
feedback -- nix-build --no-out-link
feedback -- nix-build
```
Usually `feedback` will correctly figure out which files to watch and which
files not to watch, but you can also configure this more precisely.
### Declarative feedback loops
You can declare feedback loops in the `feedback.yaml` configuration file to share them with your team.
For example, this gives you a [`ci.nix`-based feedback loop](https://cs-syd.eu/posts/2021-04-11-the-ci-nix-pattern):
For example, this gives you a flake-based feedback loop:
```
``` yaml
loops:
ci: nix-build ci.nix --no-out-link
check: nix flake check -L
```
Then you can just run this command, and not have to remember the full incantation:
```
feedback ci
feedback check
```
To see the full reference of options of the configuration file, run `feedback --help`.
@ -38,6 +41,61 @@ When sharing feedback loops with team members, it is important that no one break
You can use `feedback-test` to test out the feedback loops in a one-shot manner, so you can check that they still work on CI.
See `feedback-test --help` for more details.
## Installation
### Try it out
```
nix run github:NorfairKing/feedback
```
### Install globally
Add this to your system flake:
``` nix
{
inputs = {
feedback.url = "github:NorfairKing/feedback?ref=flake";
};
outputs = { nixpkgs, feedback, ... }:
let system = "x86_64-linux";
in {
nixosConfigurations.example = nixpkgs.lib.nixosSystem {
inherit system;
modules = [
{ environment.systemPackages = [ feedback.packages.${system}.default ];
];
}
};
};
}
```
## Hacking
1. Enter a dev shell
```
$ nix develop
```
2. Start a feedback loop
```
feedback istall
```
3. Make your changes
4. Make sure CI will pass
```
nix flake check
```
5. Make a PR to `development`.
## Comparison with other tools
| | feedback | [steeloverseer](https://github.com/schell/steeloverseer) | [watchexec](https://github.com/watchexec/watchexec) | [entr](https://github.com/eradman/entr)

6
TODO.smos
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@ -1,8 +1,5 @@
version: 2.0.0
value:
- Configurable debouncing
- Configurable postponing with --postpone
- Enter to rerun immediately
- header: On-busy configuration
contents: |-
options:
@ -13,9 +10,6 @@ value:
- Send a given signal
- header: Extension-based filter
contents: This is simple enough to accomodate
- Make it possible to use polling
- header: Make it possible to not use a shell
contents: also to use adifferent shell?
- Make it possible to turn off default ignores
- Show info if feedback is called without args
- Autocompletion for the loops, assuming we use the default config

2
cabal.project Normal file
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@ -0,0 +1,2 @@
packages: */*.cabal
test-show-details: direct

18
ci.nix
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@ -1,18 +0,0 @@
let
sources = import ./nix/sources.nix;
pkgs = import ./nix/pkgs.nix { inherit sources; };
pre-commit = import ./nix/pre-commit.nix { inherit sources; };
in
{
release = pkgs.feedbackRelease;
pre-commit-check = pre-commit.run;
hoogle = pkgs.buildEnv {
name = "feedback-hoogle";
paths = [ (pkgs.haskellPackages.ghcWithHoogle (ps: pkgs.lib.attrValues pkgs.feedbackPackages)) ];
};
shell = pkgs.symlinkJoin {
name = "shell";
paths = (import ./shell.nix { inherit sources pkgs pre-commit; }).buildInputs;
};
}

4
default.nix
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@ -1,4 +0,0 @@
let
pkgs = import ./nix/pkgs.nix { };
in
pkgs.feedbackPackages

13
feedback.yaml
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@ -1,19 +1,12 @@
loops:
ci:
description: Run all of CI
command: nix-build ci.nix --no-out-link
command: nix flake check
install:
description: Work on `feedback` and its `--help` page.
script: |
set -x
stack install :feedback \
--fast --no-nix --system-ghc --with-hpack hpack
~/.local/bin/feedback --help
command: cabal run feedback:feedback -- --help
test:
description: Work on `feedback-test`
script: |
stack install :feedback-test \
--fast --no-nix --system-ghc --with-hpack hpack
~/.local/bin/feedback-test --debug ci
command: cabal run feedback:feedback-test

25
feedback/default.nix Normal file
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@ -0,0 +1,25 @@
{ mkDerivation, autodocodec, autodocodec-yaml, base, bytestring
, conduit, containers, envparse, fsnotify, lib
, optparse-applicative, path, path-io, pretty-show
, safe-coloured-text, safe-coloured-text-layout
, safe-coloured-text-terminfo, text, time, typed-process, unix
, unliftio, yaml
}:
mkDerivation {
pname = "feedback";
version = "0.0.0.0";
src = ./.;
isLibrary = true;
isExecutable = true;
libraryHaskellDepends = [
autodocodec autodocodec-yaml base bytestring conduit containers
envparse fsnotify optparse-applicative path path-io pretty-show
safe-coloured-text safe-coloured-text-layout
safe-coloured-text-terminfo text time typed-process unix unliftio
yaml
];
executableHaskellDepends = [ base ];
homepage = "https://github.com/NorfairKing/feedback#readme";
description = "Declarative feedback loop manager";
license = lib.licenses.gpl3Only;
}

2
feedback/src/Feedback/Common/Process.hs
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@ -58,7 +58,7 @@ makeProcessConfigFor RunSettings {..} = do
pure $
setStdout inherit
. setStderr inherit
. setStdin closed -- TODO make this configurable?
. setStdin nullStream -- TODO make this configurable?
. setEnv envForProcess
. maybe id (setWorkingDir . fromAbsDir) runSettingWorkingDir
$ shell commandString

148
flake.lock Normal file
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@ -0,0 +1,148 @@
{
"nodes": {
"autodocodec": {
"flake": false,
"locked": {
"lastModified": 1666331698,
"narHash": "sha256-VrONoycKv3lOwN/oKet3Pix96aFNgK+PmLevzBgSsgY=",
"owner": "NorfairKing",
"repo": "autodocodec",
"rev": "fdc5171d0f904613b6a8b986a909c7a8ade4d2f1",
"type": "github"
},
"original": {
"owner": "NorfairKing",
"ref": "flake",
"repo": "autodocodec",
"type": "github"
}
},
"flake-utils": {
"locked": {
"lastModified": 1667077288,
"narHash": "sha256-bdC8sFNDpT0HK74u9fUkpbf1MEzVYJ+ka7NXCdgBoaA=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "6ee9ebb6b1ee695d2cacc4faa053a7b9baa76817",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1668281765,
"narHash": "sha256-6Tuj9CZ9HacMk7FJ8sF9XSVTBnUhVzlSY40Jo1krIaQ=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "c5091eec689acc45d4d818109236da31d3685ca2",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-22.05",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs_2": {
"locked": {
"lastModified": 1668266328,
"narHash": "sha256-+nAW+XR8nswyEnt5IkQlkrz9erTcQWBVLkhtNHxckFw=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "5ca8e2e9e1fa5e66a749b39261ad6bd0e07bc87f",
"type": "github"
},
"original": {
"id": "nixpkgs",
"type": "indirect"
}
},
"pre-commit-hooks": {
"inputs": {
"flake-utils": "flake-utils",
"nixpkgs": "nixpkgs_2"
},
"locked": {
"lastModified": 1667992213,
"narHash": "sha256-8Ens8ozllvlaFMCZBxg6S7oUyynYx2v7yleC5M0jJsE=",
"owner": "cachix",
"repo": "pre-commit-hooks.nix",
"rev": "ebcbfe09d2bd6d15f68de3a0ebb1e4dcb5cd324b",
"type": "github"
},
"original": {
"owner": "cachix",
"repo": "pre-commit-hooks.nix",
"type": "github"
}
},
"root": {
"inputs": {
"autodocodec": "autodocodec",
"nixpkgs": "nixpkgs",
"pre-commit-hooks": "pre-commit-hooks",
"safe-coloured-text": "safe-coloured-text",
"sydtest": "sydtest",
"validity": "validity"
}
},
"safe-coloured-text": {
"flake": false,
"locked": {
"lastModified": 1666332070,
"narHash": "sha256-Jvx1599QUkgzPhdvSOrxEKKBXF42eYv26EgXwM+RguU=",
"owner": "NorfairKing",
"repo": "safe-coloured-text",
"rev": "df6d65d1afb0140d081b685b411dcfe03ae6f789",
"type": "github"
},
"original": {
"owner": "NorfairKing",
"ref": "flake",
"repo": "safe-coloured-text",
"type": "github"
}
},
"sydtest": {
"flake": false,
"locked": {
"lastModified": 1666335564,
"narHash": "sha256-RUAQuAaCCF+bFXWKQV9lx3Caj9pHp7l5NGnMfBaK05I=",
"owner": "NorfairKing",
"repo": "sydtest",
"rev": "56eb625a7603652f475d0cfd4af50b700e9a5d1e",
"type": "github"
},
"original": {
"owner": "NorfairKing",
"ref": "flake",
"repo": "sydtest",
"type": "github"
}
},
"validity": {
"flake": false,
"locked": {
"lastModified": 1666331942,
"narHash": "sha256-xKqunzWw3w7OaKSatckNxn7gCKtusjaj9szhgBWQwAc=",
"owner": "NorfairKing",
"repo": "validity",
"rev": "dc24b655564beaa6750e390e37e64f8b0b67e18f",
"type": "github"
},
"original": {
"owner": "NorfairKing",
"ref": "flake",
"repo": "validity",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

80
flake.nix Normal file
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@ -0,0 +1,80 @@
{
description = "feedback";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-22.05";
pre-commit-hooks.url = "github:cachix/pre-commit-hooks.nix";
validity.url = "github:NorfairKing/validity?ref=flake";
validity.flake = false;
autodocodec.url = "github:NorfairKing/autodocodec?ref=flake";
autodocodec.flake = false;
safe-coloured-text.url = "github:NorfairKing/safe-coloured-text?ref=flake";
safe-coloured-text.flake = false;
sydtest.url = "github:NorfairKing/sydtest?ref=flake";
sydtest.flake = false;
};
outputs =
{ self
, nixpkgs
, pre-commit-hooks
, validity
, safe-coloured-text
, sydtest
, autodocodec
}:
let
system = "x86_64-linux";
pkgsFor = nixpkgs: import nixpkgs {
inherit system;
config.allowUnfree = true;
overlays = [
self.overlays.${system}
(import (autodocodec + "/nix/overlay.nix"))
(import (safe-coloured-text + "/nix/overlay.nix"))
(import (sydtest + "/nix/overlay.nix"))
(import (validity + "/nix/overlay.nix"))
];
};
pkgs = pkgsFor nixpkgs;
in
{
overlays.${system} = import ./nix/overlay.nix;
packages.${system}.default = pkgs.feedback;
checks.${system} = {
package = self.packages.${system}.default;
shell = self.devShells.${system}.default;
pre-commit = pre-commit-hooks.lib.${system}.run {
src = ./.;
hooks = {
hlint.enable = true;
hpack.enable = true;
ormolu.enable = true;
nixpkgs-fmt.enable = true;
nixpkgs-fmt.excludes = [ ".*/default.nix" ];
cabal2nix.enable = true;
};
};
};
devShells.${system}.default = pkgs.haskellPackages.shellFor {
name = "feedback-shell";
packages = p: [ p.feedback ];
withHoogle = true;
doBenchmark = true;
buildInputs = with pkgs; [
feedback
niv
zlib
cabal-install
] ++ (with pre-commit-hooks;
[
hlint
hpack
nixpkgs-fmt
ormolu
cabal2nix
]);
shellHook = self.checks.${system}.pre-commit.shellHook + pkgs.feedback.shellHook;
};
};
}

71
nix/overlay.nix
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@ -1,19 +1,25 @@
final: previous:
final: prev:
with final.lib;
with final.haskell.lib;
let
sources = import ./sources.nix;
in
{
feedbackPackages =
let
feedbackPkg = name:
overrideCabal
feedback = (justStaticExecutables final.haskellPackages.feedback).overrideAttrs (old: {
passthru = (old.passthru or { }) // {
shellHook = ''
${final.haskellPackages.feedback}/bin/feedback
'';
};
});
haskellPackages = prev.haskellPackages.override (old: {
overrides = composeExtensions (old.overrides or (_: _: { })) (
self: super:
{
feedback = generateOptparseApplicativeCompletion "feedback" (
buildFromSdist (overrideCabal
(
final.haskellPackages.callCabal2nixWithOptions name
(final.gitignoreSource (../. + "/${name}"))
"--no-hpack"
self.callPackage
../feedback
{ }
)
(old: {
@ -21,7 +27,6 @@ in
doHaddock = true;
doCoverage = false;
doHoogle = true;
doCheck = false; # Only check the release version.
hyperlinkSource = false;
enableLibraryProfiling = false;
enableExecutableProfiling = false;
@ -43,42 +48,8 @@ in
# Ugly hack because we can't just add flags to the 'test' invocation.
# Show test output as we go, instead of all at once afterwards.
testTarget = (old.testTarget or "") + " --show-details=direct";
})));
}
);
});
feedbackPkgWithComp =
exeName: name:
generateOptparseApplicativeCompletion exeName (feedbackPkg name);
feedbackPkgWithOwnComp = name: feedbackPkgWithComp name name;
in
{
"feedback" = feedbackPkgWithOwnComp "feedback";
};
feedbackReleasePackages = mapAttrs
(_: pkg: justStaticExecutables (doCheck pkg))
final.feedbackPackages;
feedbackRelease =
final.symlinkJoin {
name = "feedback-release";
paths = attrValues final.feedbackReleasePackages;
passthru.shellHook = ''
${final.feedbackReleasePackages.feedback}/bin/feedback
'';
};
feedback = final.feedbackRelease;
haskellPackages =
previous.haskellPackages.override (
old:
{
overrides =
composeExtensions (old.overrides or (_: _: { })) (
self: super:
final.feedbackPackages
);
}
);
}

14
nix/pkgs.nix
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@ -1,14 +0,0 @@
{ sources ? import ./sources.nix
}:
import sources.nixpkgs {
overlays =
[
(final: previous: { inherit (import sources.gitignore { inherit (final) lib; }) gitignoreSource; })
(import (sources.autodocodec + "/nix/overlay.nix"))
(import (sources.safe-coloured-text + "/nix/overlay.nix"))
(import (sources.sydtest + "/nix/overlay.nix"))
(import (sources.validity + "/nix/overlay.nix"))
(import ./overlay.nix)
];
config.allowUnfree = true;
}

21
nix/pre-commit.nix
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@ -1,21 +0,0 @@
{ sources ? import ./sources.nix }:
let
pre-commit-hooks = import sources.pre-commit-hooks;
in
{
run = pre-commit-hooks.run {
src = ../.;
hooks = {
hlint.enable = true;
hpack.enable = true;
nixpkgs-fmt.enable = true;
ormolu.enable = true;
};
};
tools = with pre-commit-hooks; [
hlint
hpack
nixpkgs-fmt
ormolu
];
}

98
nix/sources.json
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@ -1,98 +0,0 @@
{
"autodocodec": {
"branch": "master",
"description": "self(auto)- documenting encoders and decoders",
"homepage": "",
"owner": "NorfairKing",
"repo": "autodocodec",
"rev": "98135d2b24c4c52f56f53c6650a169aeec61c7f1",
"sha256": "0srbn65343a213690samf7pf2q0kvnngpv6wn0srm57dpv0f68hn",
"type": "tarball",
"url": "https://github.com/NorfairKing/autodocodec/archive/98135d2b24c4c52f56f53c6650a169aeec61c7f1.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"gitignore": {
"branch": "master",
"description": "Nix functions for filtering local git sources",
"homepage": "",
"owner": "hercules-ci",
"repo": "gitignore.nix",
"rev": "a20de23b925fd8264fd7fad6454652e142fd7f73",
"sha256": "07vg2i9va38zbld9abs9lzqblz193vc5wvqd6h7amkmwf66ljcgh",
"type": "tarball",
"url": "https://github.com/hercules-ci/gitignore.nix/archive/a20de23b925fd8264fd7fad6454652e142fd7f73.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"niv": {
"branch": "master",
"description": "Easy dependency management for Nix projects",
"homepage": "https://github.com/nmattia/niv",
"owner": "nmattia",
"repo": "niv",
"rev": "82e5cd1ad3c387863f0545d7591512e76ab0fc41",
"sha256": "090l219mzc0gi33i3psgph6s2pwsc8qy4lyrqjdj4qzkvmaj65a7",
"type": "tarball",
"url": "https://github.com/nmattia/niv/archive/82e5cd1ad3c387863f0545d7591512e76ab0fc41.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"nixpkgs": {
"branch": "nixos-22.05",
"description": "Nix Packages collection",
"homepage": "",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "a82127cea64fd801c5e138ae23dfd444ec1e06d1",
"sha256": "07i03bwpk5s6daqc5s1v02zfjzmvl5sz8s3xccg9akcbn9phyn2s",
"type": "tarball",
"url": "https://github.com/NixOS/nixpkgs/archive/a82127cea64fd801c5e138ae23dfd444ec1e06d1.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"pre-commit-hooks": {
"branch": "master",
"description": "Seamless integration of https://pre-commit.com git hooks with Nix.",
"homepage": "",
"owner": "cachix",
"repo": "pre-commit-hooks.nix",
"rev": "521a524771a8e93caddaa0ac1d67d03766a8b0b3",
"sha256": "16qfrylk41r7gc7g4352hxz7b3vk9w7bc6893apmmr6yy08ra0m9",
"type": "tarball",
"url": "https://github.com/cachix/pre-commit-hooks.nix/archive/521a524771a8e93caddaa0ac1d67d03766a8b0b3.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"safe-coloured-text": {
"branch": "master",
"description": null,
"homepage": "https://cs-syd.eu/posts/2021-03-07-safe-coloured-text",
"owner": "NorfairKing",
"repo": "safe-coloured-text",
"rev": "675cb01fce5f46718416d7746de5b856ed90a63f",
"sha256": "18lf28k51f24smkyba0dfv1hqz3jxfqr81w70zjvbw77z5q0vxf6",
"type": "tarball",
"url": "https://github.com/NorfairKing/safe-coloured-text/archive/675cb01fce5f46718416d7746de5b856ed90a63f.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"sydtest": {
"branch": "master",
"description": "A modern testing framework for Haskell with good defaults and advanced testing features.",
"homepage": "",
"owner": "NorfairKing",
"repo": "sydtest",
"rev": "130de92053c1c3d60a8f45d509210415ffbea530",
"sha256": "1873sjmmxfmf2iig5p1ka0y7n7n1zmiv92d6pq4cyc9a2f10184a",
"type": "tarball",
"url": "https://github.com/NorfairKing/sydtest/archive/130de92053c1c3d60a8f45d509210415ffbea530.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"validity": {
"branch": "master",
"description": "Validity and validity-based testing",
"homepage": "https://www.youtube.com/watch?v=eIs9qNh17SM",
"owner": "NorfairKing",
"repo": "validity",
"rev": "8373ac5f0f02ad66f1b83c9bf572290430e84062",
"sha256": "04rs2hq9xz9y8w5zpc15zazm8dcbkd5kryh4cy7yww187jgp0saq",
"type": "tarball",
"url": "https://github.com/NorfairKing/validity/archive/8373ac5f0f02ad66f1b83c9bf572290430e84062.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
}
}

177
nix/sources.nix
View File

@ -1,177 +0,0 @@
# This file has been generated by Niv.
let
#
# The fetchers. fetch_<type> fetches specs of type <type>.
#
fetch_file = pkgs: name: spec:
let
name' = sanitizeName name + "-src";
in
if spec.builtin or true then
builtins_fetchurl { inherit (spec) url sha256; name = name'; }
else
pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
fetch_tarball = pkgs: name: spec:
let
name' = sanitizeName name + "-src";
in
if spec.builtin or true then
builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
else
pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
fetch_git = name: spec:
let
ref =
if spec ? ref then spec.ref else
if spec ? branch then "refs/heads/${spec.branch}" else
if spec ? tag then "refs/tags/${spec.tag}" else
abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
in
builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
fetch_local = spec: spec.path;
fetch_builtin-tarball = name: throw
''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
$ niv modify ${name} -a type=tarball -a builtin=true'';
fetch_builtin-url = name: throw
''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
$ niv modify ${name} -a type=file -a builtin=true'';
#
# Various helpers
#
# https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
sanitizeName = name:
(
concatMapStrings (s: if builtins.isList s then "-" else s)
(
builtins.split "[^[:alnum:]+._?=-]+"
((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
)
);
# The set of packages used when specs are fetched using non-builtins.
mkPkgs = sources: system:
let
sourcesNixpkgs =
import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
hasThisAsNixpkgsPath = <nixpkgs> == ./.;
in
if builtins.hasAttr "nixpkgs" sources
then sourcesNixpkgs
else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
import <nixpkgs> { }
else
abort
''
Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
add a package called "nixpkgs" to your sources.json.
'';
# The actual fetching function.
fetch = pkgs: name: spec:
if ! builtins.hasAttr "type" spec then
abort "ERROR: niv spec ${name} does not have a 'type' attribute"
else if spec.type == "file" then fetch_file pkgs name spec
else if spec.type == "tarball" then fetch_tarball pkgs name spec
else if spec.type == "git" then fetch_git name spec
else if spec.type == "local" then fetch_local spec
else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
else if spec.type == "builtin-url" then fetch_builtin-url name
else
abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
# If the environment variable NIV_OVERRIDE_${name} is set, then use
# the path directly as opposed to the fetched source.
replace = name: drv:
let
saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
in
if ersatz == "" then drv else
# this turns the string into an actual Nix path (for both absolute and
# relative paths)
if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
# Ports of functions for older nix versions
# a Nix version of mapAttrs if the built-in doesn't exist
mapAttrs = builtins.mapAttrs or (
f: set: with builtins;
listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
);
# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
range = first: last: if first > last then [ ] else builtins.genList (n: first + n) (last - first + 1);
# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
concatMapStrings = f: list: concatStrings (map f list);
concatStrings = builtins.concatStringsSep "";
# https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
optionalAttrs = cond: as: if cond then as else { };
# fetchTarball version that is compatible between all the versions of Nix
builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
let
inherit (builtins) lessThan nixVersion fetchTarball;
in
if lessThan nixVersion "1.12" then
fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
else
fetchTarball attrs;
# fetchurl version that is compatible between all the versions of Nix
builtins_fetchurl = { url, name ? null, sha256 }@attrs:
let
inherit (builtins) lessThan nixVersion fetchurl;
in
if lessThan nixVersion "1.12" then
fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
else
fetchurl attrs;
# Create the final "sources" from the config
mkSources = config:
mapAttrs
(
name: spec:
if builtins.hasAttr "outPath" spec
then
abort
"The values in sources.json should not have an 'outPath' attribute"
else
spec // { outPath = replace name (fetch config.pkgs name spec); }
)
config.sources;
# The "config" used by the fetchers
mkConfig =
{ sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
, sources ? if isNull sourcesFile then { } else builtins.fromJSON (builtins.readFile sourcesFile)
, system ? builtins.currentSystem
, pkgs ? mkPkgs sources system
}: rec {
# The sources, i.e. the attribute set of spec name to spec
inherit sources;
# The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
inherit pkgs;
};
in
mkSources (mkConfig { }) // { __functor = _: settings: mkSources (mkConfig settings); }

11
shell.nix
View File

@ -1,11 +0,0 @@
{ sources ? import ./nix/sources.nix
, pkgs ? import ./nix/pkgs.nix { inherit sources; }
, pre-commit ? import ./nix/pre-commit.nix { inherit sources; }
}:
pkgs.haskell.lib.buildStackProject {
name = "feedback-shell";
buildInputs = with pkgs; [
(import sources.niv { }).niv
zlib
] ++ pre-commit.tools;
}

64
stack.yaml
View File

@ -1,64 +0,0 @@
resolver: lts-19.6
packages:
- feedback
ghc-options:
"$locals": -Wall -Wincomplete-uni-patterns -Wincomplete-record-updates -Wpartial-fields -Widentities -Wredundant-constraints -Wcpp-undef
extra-deps:
- github: NorfairKing/safe-coloured-text
commit: 675cb01fce5f46718416d7746de5b856ed90a63f
subdirs:
- safe-coloured-text
- safe-coloured-text-layout
- safe-coloured-text-terminfo
- github: NorfairKing/sydtest
commit: 130de92053c1c3d60a8f45d509210415ffbea530
subdirs:
- sydtest
- github: NorfairKing/autodocodec
commit: 98135d2b24c4c52f56f53c6650a169aeec61c7f1
subdirs:
- autodocodec
- autodocodec-schema
- autodocodec-yaml
- github: NorfairKing/validity
commit: 8373ac5f0f02ad66f1b83c9bf572290430e84062
subdirs:
- genvalidity
- genvalidity-aeson
- genvalidity-bytestring
- genvalidity-containers
- genvalidity-criterion
- genvalidity-path
- genvalidity-persistent
- genvalidity-property
- genvalidity-scientific
- genvalidity-sydtest
- genvalidity-sydtest-aeson
- genvalidity-sydtest-hashable
- genvalidity-sydtest-lens
- genvalidity-sydtest-persistent
- genvalidity-text
- genvalidity-time
- genvalidity-unordered-containers
- genvalidity-uuid
- genvalidity-vector
- validity
- validity-aeson
- validity-bytestring
- validity-containers
- validity-path
- validity-persistent
- validity-primitive
- validity-scientific
- validity-text
- validity-time
- validity-unordered-containers
- validity-uuid
- validity-vector
nix:
enable: true
shell-file: shell.nix