diff options
Diffstat (limited to 'nix')
| -rw-r--r-- | nix/sources.json | 26 | ||||
| -rw-r--r-- | nix/sources.nix | 197 |
2 files changed, 223 insertions, 0 deletions
diff --git a/nix/sources.json b/nix/sources.json new file mode 100644 index 0000000..c8fe824 --- /dev/null +++ b/nix/sources.json @@ -0,0 +1,26 @@ +{ + "niv": { + "branch": "master", + "description": "Easy dependency management for Nix projects", + "homepage": "https://github.com/nmattia/niv", + "owner": "nmattia", + "repo": "niv", + "rev": "9d35b9e4837ab88517210b1701127612c260eccf", + "sha256": "0q50xhnm8g2yfyakrh0nly4swyygxpi0a8cb9gp65wcakcgvzvdh", + "type": "tarball", + "url": "https://github.com/nmattia/niv/archive/9d35b9e4837ab88517210b1701127612c260eccf.tar.gz", + "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz" + }, + "nixpkgs": { + "branch": "nixos-unstable", + "description": "Nix Packages collection", + "homepage": "", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "420f89ceb267b461eed5d025b6c3c0e57703cc5c", + "sha256": "0c9kr76p6nmf4z2j2afgcddckbaxq6kxlmp1895h6qamm1c0ypb9", + "type": "tarball", + "url": "https://github.com/NixOS/nixpkgs/archive/420f89ceb267b461eed5d025b6c3c0e57703cc5c.tar.gz", + "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz" + } +} diff --git a/nix/sources.nix b/nix/sources.nix new file mode 100644 index 0000000..9f418ad --- /dev/null +++ b/nix/sources.nix @@ -0,0 +1,197 @@ +# This file has been generated by Niv. + +let + + # + # The fetchers. fetch_<type> fetches specs of type <type>. + # + + fetch_file = pkgs: name: spec: + let name' = sanitizeName name + "-src"; + in if spec.builtin or true then + builtins_fetchurl { + inherit (spec) url sha256; + name = name'; + } + else + pkgs.fetchurl { + inherit (spec) url sha256; + name = name'; + }; + + fetch_tarball = pkgs: name: spec: + let name' = sanitizeName name + "-src"; + in if spec.builtin or true then + builtins_fetchTarball { + name = name'; + inherit (spec) url sha256; + } + else + pkgs.fetchzip { + name = name'; + inherit (spec) url sha256; + }; + + fetch_git = name: spec: + let + ref = if spec ? ref then + spec.ref + else if spec ? branch then + "refs/heads/${spec.branch}" + else if spec ? tag then + "refs/tags/${spec.tag}" + else + abort + "In git source '${name}': Please specify `ref`, `tag` or `branch`!"; + in builtins.fetchGit { + url = spec.repo; + inherit (spec) rev; + inherit ref; + }; + + fetch_local = spec: spec.path; + + fetch_builtin-tarball = name: + throw '' + [${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`. + $ niv modify ${name} -a type=tarball -a builtin=true''; + + fetch_builtin-url = name: + throw '' + [${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`. + $ niv modify ${name} -a type=file -a builtin=true''; + + # + # Various helpers + # + + # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695 + sanitizeName = name: + (concatMapStrings (s: if builtins.isList s then "-" else s) + (builtins.split "[^[:alnum:]+._?=-]+" + ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name))); + + # The set of packages used when specs are fetched using non-builtins. + mkPkgs = sources: system: + let + sourcesNixpkgs = import + (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { + inherit system; + }; + 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 name spec + else if spec.type == "tarball" then + fetch_tarball pkgs name spec + else if spec.type == "git" then + fetch_git name spec + else if spec.type == "local" then + fetch_local spec + else if spec.type == "builtin-tarball" then + fetch_builtin-tarball name + else if spec.type == "builtin-url" then + fetch_builtin-url name + else + abort + "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}"; + + # If the environment variable NIV_OVERRIDE_${name} is set, then use + # the path directly as opposed to the fetched source. + replace = name: drv: + let + saneName = stringAsChars + (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name; + ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}"; + in if ersatz == "" then drv else ersatz; + + # Ports of functions for older nix versions + + # a Nix version of mapAttrs if the built-in doesn't exist + mapAttrs = builtins.mapAttrs or (f: set: + with builtins; + listToAttrs (map (attr: { + name = attr; + value = f attr set.${attr}; + }) (attrNames set))); + + # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295 + range = first: last: + if first > last then + [ ] + else + builtins.genList (n: first + n) (last - first + 1); + + # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257 + stringToCharacters = s: + map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1)); + + # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269 + stringAsChars = f: s: concatStrings (map f (stringToCharacters s)); + concatMapStrings = f: list: concatStrings (map f list); + concatStrings = builtins.concatStringsSep ""; + + # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331 + optionalAttrs = cond: as: if cond then as else { }; + + # fetchTarball version that is compatible between all the versions of Nix + builtins_fetchTarball = { url, name ? null, sha256 }@attrs: + let inherit (builtins) lessThan nixVersion fetchTarball; + in if lessThan nixVersion "1.12" then + fetchTarball + ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; })) + else + fetchTarball attrs; + + # fetchurl version that is compatible between all the versions of Nix + builtins_fetchurl = { url, name ? null, sha256 }@attrs: + let inherit (builtins) lessThan nixVersion fetchurl; + in if lessThan nixVersion "1.12" then + fetchurl + ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; })) + 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 = replace name (fetch config.pkgs name spec); }) + config.sources; + + # The "config" used by the fetchers + mkConfig = { sourcesFile ? + if builtins.pathExists ./sources.json then ./sources.json else null + , sources ? if isNull sourcesFile then + { } + else + builtins.fromJSON (builtins.readFile sourcesFile) + , system ? builtins.currentSystem, pkgs ? mkPkgs sources system }: 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); +} |