Add common/lib.nix
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a49e5ab33a
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5 changed files with 184 additions and 2 deletions
43
common/lib.nix
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43
common/lib.nix
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@ -0,0 +1,43 @@
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let
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pkgs = import <nixpkgs> {};
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unstable = import <unstable> {};
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shh = unstable.haskell.lib.overrideCabal unstable.haskellPackages.shh (drv: {
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broken = false;
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doCheck = false;
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});
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writeHaskellScript = { name ? "haskell-script", bins ? [pkgs.coreutils], libraries ? [], imports ? []}: code:
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unstable.writers.writeHaskellBin name { libraries = libraries ++ [shh]; } ''
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{-# LANGUAGE DeriveDataTypeable #-}
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{-# LANGUAGE TemplateHaskell #-}
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import Shh
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${builtins.concatStringsSep "\n" (map (x: "import ${x}") imports)}
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-- Load binaries from Nix packages. The dependencies will be captured
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-- in the closure.
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loadFromBins ["${builtins.concatStringsSep ''", "'' (builtins.map toString bins)}"]
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${code}
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'';
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in {
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inherit writeHaskellScript;
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getNivPath = writeHaskellScript {
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name = "get-niv-path";
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bins = [pkgs.nix pkgs.coreutils];
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imports = ["System.Console.CmdArgs.Implicit" "Data.Text.Lazy" "Data.Text.Lazy.Encoding"];
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libraries = [ unstable.haskellPackages.cmdargs unstable.haskellPackages.text ];
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} ''
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data Path = Path {
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sources :: String,
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channel :: String
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} deriving (Show, Data, Typeable)
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path = Path{ sources = def &= argPos 0, channel = def &= argPos 1}
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main :: IO ()
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main = do
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path <- cmdArgs path
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path <- readTrim $ nix_instantiate "--eval" "-E" ("toString (import " ++ sources path ++ ")." ++ channel path)
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echo . unpack . dropAround ('"' ==) $ decodeUtf8 path
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'';
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}
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@ -1,6 +1,6 @@
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{ pkgs, config, ... }:
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{ pkgs, config, ... }:
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let
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let
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inherit (import ../nix/my-lib.nix) writeHaskellScript getNivPath;
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inherit (import ../common/my-lib.nix) writeHaskellScript getNivPath;
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sources = import ../nix/sources.nix;
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sources = import ../nix/sources.nix;
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inherit (config.m-0.private) me meWork;
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inherit (config.m-0.private) me meWork;
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configPath = "/home/${config.home.username}/git/nixos/config";
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configPath = "/home/${config.home.username}/git/nixos/config";
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50
nix/sources.json
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50
nix/sources.json
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{
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"home-manager": {
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"branch": "release-19.03",
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"description": "Manage a user environment using Nix",
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"homepage": "",
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"owner": "rycee",
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"repo": "home-manager",
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"rev": "4f13f06b016d59420cafe34915abdd6b795d3416",
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"sha256": "1chl04jimba1n1r4cqaq66kry4fy2xgsdgbqcl3rkw4ykd5yfcsc",
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"type": "tarball",
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"url": "https://github.com/rycee/home-manager/archive/4f13f06b016d59420cafe34915abdd6b795d3416.tar.gz",
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"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
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},
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"niv": {
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"branch": "master",
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"description": "Easy dependency management for Nix projects",
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"homepage": "https://github.com/nmattia/niv",
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"owner": "nmattia",
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"repo": "niv",
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"rev": "8b7b70465c130d8d7a98fba1396ad1481daee518",
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"sha256": "0fgdrxn2vzpnzr6pxaiyn5zzbd812c6f7xjjhfir0kpzamjnxwwl",
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"type": "tarball",
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"url": "https://github.com/nmattia/niv/archive/8b7b70465c130d8d7a98fba1396ad1481daee518.tar.gz",
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"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
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},
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"nixpkgs": {
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"branch": "nixos-19.03",
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"description": "Nixpkgs/NixOS branches that track the Nixpkgs/NixOS channels",
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"homepage": null,
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"owner": "NixOS",
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"repo": "nixpkgs-channels",
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"rev": "55b8860aa209e987f6f15c523811e4861d97d6af",
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"sha256": "0ri58704vwv6gnyw33vjirgnvh2f1201vbflk0ydj5ff7vpyy7hf",
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"type": "tarball",
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"url": "https://github.com/NixOS/nixpkgs-channels/archive/55b8860aa209e987f6f15c523811e4861d97d6af.tar.gz",
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"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
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},
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"unstable": {
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"branch": "nixos-unstable",
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"description": "Nixpkgs/NixOS branches that track the Nixpkgs/NixOS channels",
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"homepage": null,
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"owner": "NixOS",
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"repo": "nixpkgs-channels",
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"rev": "362be9608c3e0dc5216e9d1d5f5c1a5643b7f7b1",
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"sha256": "0934rhanamsnhawg15gg6cy9ird3c47hsqn5s46lq2n5kzl6v7ly",
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"type": "tarball",
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"url": "https://github.com/NixOS/nixpkgs-channels/archive/362be9608c3e0dc5216e9d1d5f5c1a5643b7f7b1.tar.gz",
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"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
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}
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}
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89
nix/sources.nix
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89
nix/sources.nix
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# This file has been generated by Niv.
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# A record, from name to path, of the third-party packages
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with rec
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{
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pkgs =
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if hasNixpkgsPath
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then
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if hasThisAsNixpkgsPath
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then import (builtins_fetchTarball { inherit (sources_nixpkgs) url sha256; }) {}
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else import <nixpkgs> {}
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else
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import (builtins_fetchTarball { inherit (sources_nixpkgs) url sha256; }) {};
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sources_nixpkgs =
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if builtins.hasAttr "nixpkgs" sources
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then sources.nixpkgs
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else abort
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''
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Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
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add a package called "nixpkgs" to your sources.json.
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'';
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# fetchTarball version that is compatible between all the versions of Nix
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builtins_fetchTarball =
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{ url, sha256 }@attrs:
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let
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inherit (builtins) lessThan nixVersion fetchTarball;
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in
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if lessThan nixVersion "1.12" then
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fetchTarball { inherit url; }
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else
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fetchTarball attrs;
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# fetchurl version that is compatible between all the versions of Nix
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builtins_fetchurl =
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{ url, sha256 }@attrs:
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let
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inherit (builtins) lessThan nixVersion fetchurl;
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in
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if lessThan nixVersion "1.12" then
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fetchurl { inherit url; }
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else
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fetchurl attrs;
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# A wrapper around pkgs.fetchzip that has inspectable arguments,
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# annoyingly this means we have to specify them
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fetchzip = { url, sha256 }@attrs: pkgs.fetchzip attrs;
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hasNixpkgsPath = (builtins.tryEval <nixpkgs>).success;
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hasThisAsNixpkgsPath =
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(builtins.tryEval <nixpkgs>).success && <nixpkgs> == ./.;
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sources = builtins.fromJSON (builtins.readFile ./sources.json);
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mapAttrs = builtins.mapAttrs or
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(f: set: with builtins;
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listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set)));
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# borrowed from nixpkgs
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functionArgs = f: f.__functionArgs or (builtins.functionArgs f);
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callFunctionWith = autoArgs: f: args:
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let auto = builtins.intersectAttrs (functionArgs f) autoArgs;
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in f (auto // args);
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getFetcher = spec:
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let fetcherName =
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if builtins.hasAttr "type" spec
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then builtins.getAttr "type" spec
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else "builtin-tarball";
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in builtins.getAttr fetcherName {
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"tarball" = fetchzip;
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"builtin-tarball" = builtins_fetchTarball;
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"file" = pkgs.fetchurl;
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"builtin-url" = builtins_fetchurl;
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};
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};
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# NOTE: spec must _not_ have an "outPath" attribute
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mapAttrs (_: spec:
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if builtins.hasAttr "outPath" spec
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then abort
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"The values in sources.json should not have an 'outPath' attribute"
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else
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if builtins.hasAttr "url" spec && builtins.hasAttr "sha256" spec
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then
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spec //
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{ outPath = callFunctionWith spec (getFetcher spec) { }; }
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else spec
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) sources
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{ pkgs, config, lib, ... }:
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{ pkgs, config, lib, ... }:
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let
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let
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inherit (import ../nix/my-lib.nix) writeHaskellScript getNivPath;
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inherit (import ../common/my-lib.nix) writeHaskellScript getNivPath;
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me = config.m-0.private.me;
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me = config.m-0.private.me;
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sources = import ../nix/sources.nix;
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sources = import ../nix/sources.nix;
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nixpkgsPath = sources.nixpkgs;
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nixpkgsPath = sources.nixpkgs;
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