77 lines
3 KiB
Nix
77 lines
3 KiB
Nix
self: super: {
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haskellList = list: ''["${builtins.concatStringsSep ''", "'' list}"]'';
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writeHaskellScript = { name ? "haskell-script", bins ? [ ], imports ? [ ] }:
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code:
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self.writers.makeBinWriter {
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compileScript = ''
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cp $contentPath ${name}.hs
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${self.scriptGhc}/bin/ghc ${name}.hs -threaded -Wall -Wno-unused-top-binds -Wno-missing-signatures -Wno-type-defaults -Wno-unused-imports -Werror
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mv ${name} $out
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${self.binutils-unwrapped}/bin/strip --strip-unneeded "$out"
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'';
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} "/bin/${name}" ''
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{-# LANGUAGE DeriveDataTypeable #-}
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{-# LANGUAGE TemplateHaskell #-}
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{-# LANGUAGE QuasiQuotes #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE ExtendedDefaultRules #-}
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{-# LANGUAGE MultiWayIf #-}
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{-# LANGUAGE LambdaCase #-}
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{-# LANGUAGE ViewPatterns #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE NoImplicitPrelude #-}
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{-# LANGUAGE TupleSections #-}
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{-# LANGUAGE PartialTypeSignatures #-}
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import Shh
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import Relude
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import Say
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import qualified Relude.Unsafe as Unsafe
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import qualified Data.ByteString.Lazy as LBS
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import qualified Data.ByteString as BS
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import qualified Data.Text as Text
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import System.Environment (getArgs)
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import Control.Exception (bracket, try)
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import Data.String.Interpolate (i)
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import Control.Concurrent.Async
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${builtins.concatStringsSep "\n" (map (x: "import ${x}") imports)}
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-- Load binaries from Nix packages. The dependencies will be captured
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-- in the closure.
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loadFromBins (${
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self.haskellList
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(builtins.map toString (bins ++ [ self.coreutils self.nix ]))
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} :: [String])
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getNivPath :: Text -> Text -> IO Text
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getNivPath sources channel = do
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let expression = [i|(import #{sources}/nix/sources.nix).#{channel}|] :: String
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nix_build ["-Q", "-E", expression, "--no-out-link"] &> devNull
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escaped <- nix_instantiate ["--eval" :: String, "-E", [i|toString #{expression}|]] |> captureTrim
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pure . Text.dropAround ('"' ==) . decodeUtf8 . trim $ escaped
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myNixPath :: Text -> IO [String]
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myNixPath path = concat <$> mapM getNivAssign [("home-manager", "${self.home-manager-channel}"),
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("nixpkgs", "${self.nixpkgs-channel}"),
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("nixos-unstable", "nixos-unstable")]
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where
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tag name str = ["-I", [i|#{name :: Text}=#{str :: Text}|]] :: [String]
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getNivAssign (name, repo) = tag name <$> getNivPath path repo
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buildSystemParams :: [String]
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buildSystemParams = ["<nixpkgs/nixos>", "-A", "system"]
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remoteBuildParams :: [String]
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remoteBuildParams = ["--builders", "@/etc/nix/machines", "--max-jobs", "1"]
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main :: IO ()
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${code}
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'';
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get-niv-path = self.writeHaskellScript { name = "get-niv-path"; } ''
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main = do
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[sources, channel] <- fmap toText <$> getArgs
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path <- getNivPath sources channel
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say path
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'';
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}
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