git.iko.soy/typeable/compaREST
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typeable/compaREST/nix/sources.nix
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1# This file has been generated by Niv.
3let
5 #
6 # The fetchers. fetch_<type> fetches specs of type <type>.
7 #
9 fetch_file = pkgs: name: spec:
10 let
11 name' = sanitizeName name + "-src";
12 in
13 if spec.builtin or true then
14 builtins_fetchurl { inherit (spec) url sha256; name = name'; }
15 else
16 pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
18 fetch_tarball = pkgs: name: spec:
19 let
20 name' = sanitizeName name + "-src";
21 in
22 if spec.builtin or true then
23 builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
24 else
25 pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
27 fetch_git = name: spec:
28 let
29 ref =
30 if spec ? ref then spec.ref else
31 if spec ? branch then "refs/heads/${spec.branch}" else
32 if spec ? tag then "refs/tags/${spec.tag}" else
33 abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
34 in
35 builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
37 fetch_local = spec: spec.path;
39 fetch_builtin-tarball = name: throw
40 ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
41 $ niv modify ${name} -a type=tarball -a builtin=true'';
43 fetch_builtin-url = name: throw
44 ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
45 $ niv modify ${name} -a type=file -a builtin=true'';
47 #
48 # Various helpers
49 #
51 # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
52 sanitizeName = name:
53 (
54 concatMapStrings (s: if builtins.isList s then "-" else s)
55 (
56 builtins.split "[^[:alnum:]+._?=-]+"
57 ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
58 )
59 );
61 # The set of packages used when specs are fetched using non-builtins.
62 mkPkgs = sources: system:
63 let
64 sourcesNixpkgs =
65 import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
66 hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
67 hasThisAsNixpkgsPath = <nixpkgs> == ./.;
68 in
69 if builtins.hasAttr "nixpkgs" sources
70 then sourcesNixpkgs
71 else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
72 import <nixpkgs> {}
73 else
74 abort
75 ''
76 Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
77 add a package called "nixpkgs" to your sources.json.
78 '';
80 # The actual fetching function.
81 fetch = pkgs: name: spec:
83 if ! builtins.hasAttr "type" spec then
84 abort "ERROR: niv spec ${name} does not have a 'type' attribute"
85 else if spec.type == "file" then fetch_file pkgs name spec
86 else if spec.type == "tarball" then fetch_tarball pkgs name spec
87 else if spec.type == "git" then fetch_git name spec
88 else if spec.type == "local" then fetch_local spec
89 else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
90 else if spec.type == "builtin-url" then fetch_builtin-url name
91 else
92 abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
94 # If the environment variable NIV_OVERRIDE_${name} is set, then use
95 # the path directly as opposed to the fetched source.
96 replace = name: drv:
97 let
98 saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
99 ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
100 in
101 if ersatz == "" then drv else
102 # this turns the string into an actual Nix path (for both absolute and
103 # relative paths)
104 if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
106 # Ports of functions for older nix versions
108 # a Nix version of mapAttrs if the built-in doesn't exist
109 mapAttrs = builtins.mapAttrs or (
110 f: set: with builtins;
111 listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
112 );
114 # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
115 range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
117 # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
118 stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
120 # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
121 stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
122 concatMapStrings = f: list: concatStrings (map f list);
123 concatStrings = builtins.concatStringsSep "";
125 # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
126 optionalAttrs = cond: as: if cond then as else {};
128 # fetchTarball version that is compatible between all the versions of Nix
129 builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
130 let
131 inherit (builtins) lessThan nixVersion fetchTarball;
132 in
133 if lessThan nixVersion "1.12" then
134 fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
135 else
136 fetchTarball attrs;
138 # fetchurl version that is compatible between all the versions of Nix
139 builtins_fetchurl = { url, name ? null, sha256 }@attrs:
140 let
141 inherit (builtins) lessThan nixVersion fetchurl;
142 in
143 if lessThan nixVersion "1.12" then
144 fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
145 else
146 fetchurl attrs;
148 # Create the final "sources" from the config
149 mkSources = config:
150 mapAttrs (
151 name: spec:
152 if builtins.hasAttr "outPath" spec
153 then abort
154 "The values in sources.json should not have an 'outPath' attribute"
155 else
156 spec // { outPath = replace name (fetch config.pkgs name spec); }
157 ) config.sources;
159 # The "config" used by the fetchers
160 mkConfig =
161 { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
162 , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
163 , system ? builtins.currentSystem
164 , pkgs ? mkPkgs sources system
165 }: rec {
166 # The sources, i.e. the attribute set of spec name to spec
167 inherit sources;
169 # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
170 inherit pkgs;
171 };
173in
174mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }