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Add niv sources at haskell-nix.sources (#622)
1 parent 66e40b0 commit 74915fa

10 files changed

+217
-58
lines changed

‎default.nix

Lines changed: 4 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -2,10 +2,9 @@ let haskellNix = {
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checkMaterialization ? false, # Allows us to easily switch on materialization checking
33
defaultCompilerNixName ? null, # Quick way to override the default compiler e.g. "ghc883"
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system ? builtins.currentSystem,
5-
... }: rec {
6-
sources = {
7-
inherit (import ./nixpkgs/default.nix) nixpkgs-1909 nixpkgs-2003 nixpkgs-default;
8-
};
5+
sourcesOverride ? {},
6+
... }@args: rec {
7+
sources = (import ./nix/sources.nix) // sourcesOverride;
98

109
config = import ./config.nix;
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overlays = [ allOverlays.combined ] ++ (
@@ -29,7 +28,7 @@ let haskellNix = {
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)]
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else []
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);
32-
allOverlays = import ./overlays;
31+
allOverlays = import ./overlays args;
3332
nixpkgsArgs = { inherit config overlays system; };
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pkgs = import sources.nixpkgs-default nixpkgsArgs;
3534
};

‎nix/sources.json

Lines changed: 50 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,50 @@
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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",
7+
"repo": "niv",
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"rev": "f73bf8d584148677b01859677a63191c31911eae",
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"sha256": "0jlmrx633jvqrqlyhlzpvdrnim128gc81q5psz2lpp2af8p8q9qs",
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"type": "tarball",
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"url": "https://github.com/nmattia/niv/archive/f73bf8d584148677b01859677a63191c31911eae.tar.gz",
12+
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
13+
},
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"nixpkgs-1909": {
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"branch": "nixpkgs-19.09-darwin",
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"description": "Nix Packages collection",
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"homepage": null,
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"owner": "NixOS",
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"repo": "nixpkgs",
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"rev": "9237a09d8edbae9951a67e9a3434a07ef94035b7",
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"sha256": "05bizymljzzd665bpsjbhxamcgzq7bkjjzjfapkl2nicy774ak4x",
22+
"type": "tarball",
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"url": "https://github.com/NixOS/nixpkgs/archive/9237a09d8edbae9951a67e9a3434a07ef94035b7.tar.gz",
24+
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
25+
},
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"nixpkgs-2003": {
27+
"branch": "nixpkgs-20.03-darwin",
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"description": "Nix Packages collection",
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"homepage": null,
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"owner": "NixOS",
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"repo": "nixpkgs",
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"rev": "cac363c661817666e43d047addfaa722610d425f",
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"sha256": "0fi8hgddy8qh2jrsa40jw7jxnr5lrhq2ji6a2xbndllivhzc31kf",
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"type": "tarball",
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"url": "https://github.com/NixOS/nixpkgs/archive/cac363c661817666e43d047addfaa722610d425f.tar.gz",
36+
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
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},
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"nixpkgs-default": {
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"branch": "nixpkgs-20.03-darwin",
40+
"description": "Nix Packages collection",
41+
"homepage": null,
42+
"owner": "NixOS",
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"repo": "nixpkgs",
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"rev": "cac363c661817666e43d047addfaa722610d425f",
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"sha256": "0fi8hgddy8qh2jrsa40jw7jxnr5lrhq2ji6a2xbndllivhzc31kf",
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"type": "tarball",
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"url": "https://github.com/NixOS/nixpkgs/archive/cac363c661817666e43d047addfaa722610d425f.tar.gz",
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"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
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}
50+
}

‎nix/sources.nix

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,134 @@
1+
# This file has been generated by Niv.
2+
3+
let
4+
5+
#
6+
# The fetchers. fetch_<type> fetches specs of type <type>.
7+
#
8+
9+
fetch_file = pkgs: spec:
10+
if spec.builtin or true then
11+
builtins_fetchurl { inherit (spec) url sha256; }
12+
else
13+
pkgs.fetchurl { inherit (spec) url sha256; };
14+
15+
fetch_tarball = pkgs: spec:
16+
if spec.builtin or true then
17+
builtins_fetchTarball { inherit (spec) url sha256; }
18+
else
19+
pkgs.fetchzip { inherit (spec) url sha256; };
20+
21+
fetch_git = spec:
22+
builtins.fetchGit { url = spec.repo; inherit (spec) rev ref; };
23+
24+
fetch_builtin-tarball = spec:
25+
builtins.trace
26+
''
27+
WARNING:
28+
The niv type "builtin-tarball" will soon be deprecated. You should
29+
instead use `builtin = true`.
30+
31+
$ niv modify <package> -a type=tarball -a builtin=true
32+
''
33+
builtins_fetchTarball { inherit (spec) url sha256; };
34+
35+
fetch_builtin-url = spec:
36+
builtins.trace
37+
''
38+
WARNING:
39+
The niv type "builtin-url" will soon be deprecated. You should
40+
instead use `builtin = true`.
41+
42+
$ niv modify <package> -a type=file -a builtin=true
43+
''
44+
(builtins_fetchurl { inherit (spec) url sha256; });
45+
46+
#
47+
# Various helpers
48+
#
49+
50+
# The set of packages used when specs are fetched using non-builtins.
51+
mkPkgs = sources:
52+
let
53+
sourcesNixpkgs =
54+
import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) {};
55+
hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
56+
hasThisAsNixpkgsPath = <nixpkgs> == ./.;
57+
in
58+
if builtins.hasAttr "nixpkgs" sources
59+
then sourcesNixpkgs
60+
else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
61+
import <nixpkgs> {}
62+
else
63+
abort
64+
''
65+
Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
66+
add a package called "nixpkgs" to your sources.json.
67+
'';
68+
69+
# The actual fetching function.
70+
fetch = pkgs: name: spec:
71+
72+
if ! builtins.hasAttr "type" spec then
73+
abort "ERROR: niv spec ${name} does not have a 'type' attribute"
74+
else if spec.type == "file" then fetch_file pkgs spec
75+
else if spec.type == "tarball" then fetch_tarball pkgs spec
76+
else if spec.type == "git" then fetch_git spec
77+
else if spec.type == "builtin-tarball" then fetch_builtin-tarball spec
78+
else if spec.type == "builtin-url" then fetch_builtin-url spec
79+
else
80+
abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
81+
82+
# Ports of functions for older nix versions
83+
84+
# a Nix version of mapAttrs if the built-in doesn't exist
85+
mapAttrs = builtins.mapAttrs or (
86+
f: set: with builtins;
87+
listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
88+
);
89+
90+
# fetchTarball version that is compatible between all the versions of Nix
91+
builtins_fetchTarball = { url, sha256 }@attrs:
92+
let
93+
inherit (builtins) lessThan nixVersion fetchTarball;
94+
in
95+
if lessThan nixVersion "1.12" then
96+
fetchTarball { inherit url; }
97+
else
98+
fetchTarball attrs;
99+
100+
# fetchurl version that is compatible between all the versions of Nix
101+
builtins_fetchurl = { url, sha256 }@attrs:
102+
let
103+
inherit (builtins) lessThan nixVersion fetchurl;
104+
in
105+
if lessThan nixVersion "1.12" then
106+
fetchurl { inherit url; }
107+
else
108+
fetchurl attrs;
109+
110+
# Create the final "sources" from the config
111+
mkSources = config:
112+
mapAttrs (
113+
name: spec:
114+
if builtins.hasAttr "outPath" spec
115+
then abort
116+
"The values in sources.json should not have an 'outPath' attribute"
117+
else
118+
spec // { outPath = fetch config.pkgs name spec; }
119+
) config.sources;
120+
121+
# The "config" used by the fetchers
122+
mkConfig =
123+
{ sourcesFile ? ./sources.json
124+
, sources ? builtins.fromJSON (builtins.readFile sourcesFile)
125+
, pkgs ? mkPkgs sources
126+
}: rec {
127+
# The sources, i.e. the attribute set of spec name to spec
128+
inherit sources;
129+
130+
# The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
131+
inherit pkgs;
132+
};
133+
in
134+
mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }

‎nixpkgs/default.nix

Lines changed: 2 additions & 14 deletions
Original file line numberDiff line numberDiff line change
@@ -1,16 +1,4 @@
1-
# see ../docs/dev/nixpkgs-pin.md
2-
let
3-
fetch = jsonFile:
4-
with builtins;
5-
let spec = fromJSON (readFile jsonFile);
6-
in fetchTarball {
7-
name = "nixpkgs";
8-
inherit (spec) sha256;
9-
url = "${spec.url}/archive/${spec.rev}.tar.gz";
10-
};
11-
in
1+
# This file is for backwards compatibility only
122
{
13-
nixpkgs-2003 = fetch (./. + "/release-20.03.json");
14-
nixpkgs-1909 = fetch (./. + "/release-19.09.json");
15-
nixpkgs-default = fetch (./. + "/github.json");
3+
inherit (import ../nix/sources.nix) nixpkgs-2003 nixpkgs-1909 nixpkgs-default;
164
}

‎nixpkgs/github.json

Lines changed: 0 additions & 9 deletions
This file was deleted.

‎nixpkgs/hackage-src.json

Whitespace-only changes.

‎nixpkgs/release-19.09.json

Lines changed: 0 additions & 9 deletions
This file was deleted.

‎nixpkgs/release-20.03.json

Lines changed: 0 additions & 9 deletions
This file was deleted.

‎overlays/default.nix

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,9 +1,11 @@
1+
args:
2+
13
let
24
overlays = {
35
wine = import ./wine.nix;
46
#ghcjs = import ./ghcjs-asterius-triple.nix;
57
#python = import ./python.nix;
6-
haskell = import ./haskell.nix;
8+
haskell = import ./haskell.nix args;
79
hackage-quirks = import ./hackage-quirks.nix;
810
bootstrap = import ./bootstrap.nix;
911
ghc = import ./ghc.nix;

‎overlays/haskell.nix

Lines changed: 24 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -1,3 +1,5 @@
1+
{ sourcesOverride ? {}
2+
, ... }:
13
# The haskell.nix infrastructure
24
#
35
# for hygenic reasons we'll use haskell-nix as a prefix.
@@ -10,6 +12,26 @@ final: prev: {
1012
# overlays.
1113
defaultModules = [];
1214

15+
# Niv based source pins. See https://github.com/nmattia/niv#niv
16+
# for details on how to update this using the niv tool
17+
# or edit nix/sources.json manually if you prefer.
18+
sources = {
19+
# Hackage and stackage still updated by scripts
20+
# that predate our use of niv. We have moved them
21+
# here though so that you can still use the
22+
# sourcesOverride arg or `niv add` to replace them.
23+
hackage = fetchExternal {
24+
name = "hackage-exprs-source";
25+
specJSON = hackageSourceJSON;
26+
override = "hackage";
27+
};
28+
stackage = fetchExternal {
29+
name = "stackage-snapshot-source";
30+
specJSON = stackageSourceJSON;
31+
override = "stackage";
32+
};
33+
} // (import ../nix/sources.nix) // sourcesOverride;
34+
1335
# We provide a `callPackage` function to consumers for
1436
# convenience. We will however refrain from using it
1537
# here and be explicit about imports and dependencies.
@@ -37,24 +59,15 @@ final: prev: {
3759
cleanSourceHaskell;
3860

3961
# All packages from Hackage as Nix expressions
40-
hackageSrc = fetchExternal {
41-
name = "hackage-exprs-source";
42-
specJSON = hackageSourceJSON;
43-
override = "hackage";
44-
};
62+
hackageSrc = sources.hackage;
4563
hackage = import hackageSrc;
4664

4765
# Contains the hashes of the cabal 01-index.tar.gz for given
4866
# index states. Starting from April 1st 2019.
4967
indexStateHashesPath = hackageSrc + "/index-state-hashes.nix";
5068

5169
# The set of all Stackage snapshots
52-
stackageSrc = fetchExternal {
53-
name = "stackage-snapshot-source";
54-
specJSON = stackageSourceJSON;
55-
override = "stackage";
56-
};
57-
70+
stackageSrc = sources.stackage;
5871
stackage = import stackageSrc;
5972

6073
# Utility functions for working with the component builder.

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