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updated with niv

shake
parent
commit
3a13435710
Signed by: Yann Esposito (Yogsototh) <yann.esposito@gmail.com> GPG Key ID: 7B19A4C650D59646
3 changed files with 174 additions and 1 deletions
  1. 38
    0
      nix/sources.json
  2. 134
    0
      nix/sources.nix
  3. 2
    1
      shell.nix

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- 0
nix/sources.json View File

@@ -0,0 +1,38 @@
{
"niv": {
"branch": "master",
"description": "Easy dependency management for Nix projects",
"homepage": "https://github.com/nmattia/niv",
"owner": "nmattia",
"repo": "niv",
"rev": "f73bf8d584148677b01859677a63191c31911eae",
"sha256": "0jlmrx633jvqrqlyhlzpvdrnim128gc81q5psz2lpp2af8p8q9qs",
"type": "tarball",
"url": "https://github.com/nmattia/niv/archive/f73bf8d584148677b01859677a63191c31911eae.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"nixpkgs": {
"branch": "nixpkgs-unstable",
"description": "A read-only mirror of NixOS/nixpkgs tracking the released channels. Send issues and PRs to",
"homepage": "https://github.com/NixOS/nixpkgs",
"owner": "NixOS",
"repo": "nixpkgs-channels",
"rev": "a84cbb60f0296210be03c08d243670dd18a3f6eb",
"sha256": "04j07c98iy66hpzha7brz867dcl9lkflck43xvz09dfmlvqyzmiz",
"type": "tarball",
"url": "https://github.com/NixOS/nixpkgs-channels/archive/a84cbb60f0296210be03c08d243670dd18a3f6eb.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"shake": {
"branch": "master",
"description": "Shake build system",
"homepage": "http://shakebuild.com",
"owner": "ndmitchell",
"repo": "shake",
"rev": "4536d9ce5cef0e56395fd61ccef9816c9b420fd1",
"sha256": "1s7hjhcc09l026jaca3ndbb103s9d7qlx4vqzx2s6j4rr751nd70",
"type": "tarball",
"url": "https://github.com/ndmitchell/shake/archive/4536d9ce5cef0e56395fd61ccef9816c9b420fd1.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
}
}

+ 134
- 0
nix/sources.nix View File

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# This file has been generated by Niv.

let

#
# The fetchers. fetch_<type> fetches specs of type <type>.
#

fetch_file = pkgs: spec:
if spec.builtin or true then
builtins_fetchurl { inherit (spec) url sha256; }
else
pkgs.fetchurl { inherit (spec) url sha256; };

fetch_tarball = pkgs: spec:
if spec.builtin or true then
builtins_fetchTarball { inherit (spec) url sha256; }
else
pkgs.fetchzip { inherit (spec) url sha256; };

fetch_git = spec:
builtins.fetchGit { url = spec.repo; inherit (spec) rev ref; };

fetch_builtin-tarball = spec:
builtins.trace
''
WARNING:
The niv type "builtin-tarball" will soon be deprecated. You should
instead use `builtin = true`.

$ niv modify <package> -a type=tarball -a builtin=true
''
builtins_fetchTarball { inherit (spec) url sha256; };

fetch_builtin-url = spec:
builtins.trace
''
WARNING:
The niv type "builtin-url" will soon be deprecated. You should
instead use `builtin = true`.

$ niv modify <package> -a type=file -a builtin=true
''
(builtins_fetchurl { inherit (spec) url sha256; });

#
# Various helpers
#

# The set of packages used when specs are fetched using non-builtins.
mkPkgs = sources:
let
sourcesNixpkgs =
import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {};
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 spec
else if spec.type == "tarball" then fetch_tarball pkgs spec
else if spec.type == "git" then fetch_git spec
else if spec.type == "builtin-tarball" then fetch_builtin-tarball spec
else if spec.type == "builtin-url" then fetch_builtin-url spec
else
abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";

# 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))
);

# fetchTarball version that is compatible between all the versions of Nix
builtins_fetchTarball = { url, sha256 }@attrs:
let
inherit (builtins) lessThan nixVersion fetchTarball;
in
if lessThan nixVersion "1.12" then
fetchTarball { inherit url; }
else
fetchTarball attrs;

# fetchurl version that is compatible between all the versions of Nix
builtins_fetchurl = { url, sha256 }@attrs:
let
inherit (builtins) lessThan nixVersion fetchurl;
in
if lessThan nixVersion "1.12" then
fetchurl { inherit url; }
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 = fetch config.pkgs name spec; }
) config.sources;

# The "config" used by the fetchers
mkConfig =
{ sourcesFile ? ./sources.json
, sources ? builtins.fromJSON (builtins.readFile sourcesFile)
, pkgs ? mkPkgs sources
}: 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); }

+ 2
- 1
shell.nix View File

@@ -1,5 +1,6 @@
{ pkgs ? import (fetchTarball https://github.com/NixOS/nixpkgs/archive/20.03.tar.gz) {} }:
let
sources = import ./nix/sources.nix;
pkgs = import sources.nixpkgs {};
pkgs1909 = import (fetchTarball https://github.com/NixOS/nixpkgs/archive/19.09.tar.gz) {};
haskellDeps = ps : with ps; [
shake

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