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@ -10,29 +10,50 @@ let |
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let |
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name' = sanitizeName name + "-src"; |
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in |
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if spec.builtin or true then |
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builtins_fetchurl { inherit (spec) url sha256; name = name'; } |
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else |
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pkgs.fetchurl { inherit (spec) url sha256; name = name'; }; |
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if spec.builtin or true then |
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builtins_fetchurl { inherit (spec) url sha256; name = name'; } |
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else |
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pkgs.fetchurl { inherit (spec) url sha256; name = name'; }; |
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fetch_tarball = pkgs: name: spec: |
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let |
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name' = sanitizeName name + "-src"; |
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in |
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if spec.builtin or true then |
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builtins_fetchTarball { name = name'; inherit (spec) url sha256; } |
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else |
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pkgs.fetchzip { name = name'; inherit (spec) url sha256; }; |
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if spec.builtin or true then |
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builtins_fetchTarball { name = name'; inherit (spec) url sha256; } |
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else |
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pkgs.fetchzip { name = name'; inherit (spec) url sha256; }; |
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fetch_git = name: spec: |
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let |
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ref = |
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if spec ? ref then spec.ref else |
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spec.ref or ( |
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if spec ? branch then "refs/heads/${spec.branch}" else |
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if spec ? tag then "refs/tags/${spec.tag}" else |
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abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!"; |
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if spec ? tag then "refs/tags/${spec.tag}" else |
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abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!" |
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); |
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submodules = spec.submodules or false; |
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submoduleArg = |
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let |
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nixSupportsSubmodules = builtins.compareVersions builtins.nixVersion "2.4" >= 0; |
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emptyArgWithWarning = |
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if submodules |
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then |
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builtins.trace |
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( |
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"The niv input \"${name}\" uses submodules " |
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+ "but your nix's (${builtins.nixVersion}) builtins.fetchGit " |
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+ "does not support them" |
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) |
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{ } |
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else { }; |
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in |
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if nixSupportsSubmodules |
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then { inherit submodules; } |
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else emptyArgWithWarning; |
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in |
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builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; }; |
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builtins.fetchGit |
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({ url = spec.repo; inherit (spec) rev; inherit ref; } // submoduleArg); |
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fetch_local = spec: spec.path; |
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@ -66,16 +87,16 @@ let |
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hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath; |
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hasThisAsNixpkgsPath = <nixpkgs> == ./.; |
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in |
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if builtins.hasAttr "nixpkgs" sources |
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then sourcesNixpkgs |
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else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then |
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import <nixpkgs> {} |
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else |
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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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if builtins.hasAttr "nixpkgs" sources |
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then sourcesNixpkgs |
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else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then |
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import <nixpkgs> { } |
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else |
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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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# The actual fetching function. |
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fetch = pkgs: name: spec: |
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@ -95,13 +116,13 @@ let |
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# the path directly as opposed to the fetched source. |
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replace = name: drv: |
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let |
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saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name; |
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saneName = stringAsChars (c: if (builtins.match "[a-zA-Z0-9]" c) == null then "_" else c) name; |
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ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}"; |
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in |
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if ersatz == "" then drv else |
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# this turns the string into an actual Nix path (for both absolute and |
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# relative paths) |
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if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}"; |
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if ersatz == "" then drv else |
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# this turns the string into an actual Nix path (for both absolute and |
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# relative paths) |
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if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}"; |
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# Ports of functions for older nix versions |
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@ -112,7 +133,7 @@ let |
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); |
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# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295 |
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range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1); |
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range = first: last: if first > last then [ ] else builtins.genList (n: first + n) (last - first + 1); |
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# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257 |
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stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1)); |
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@ -123,43 +144,46 @@ let |
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concatStrings = builtins.concatStringsSep ""; |
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# https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331 |
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optionalAttrs = cond: as: if cond then as else {}; |
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optionalAttrs = cond: as: if cond then as else { }; |
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# fetchTarball version that is compatible between all the versions of Nix |
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builtins_fetchTarball = { url, name ? null, 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; } // (optionalAttrs (!isNull name) { inherit name; })) |
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else |
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fetchTarball attrs; |
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if lessThan nixVersion "1.12" then |
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fetchTarball ({ inherit url; } // (optionalAttrs (name != null) { inherit name; })) |
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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 = { url, name ? null, 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; } // (optionalAttrs (!isNull name) { inherit name; })) |
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else |
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fetchurl attrs; |
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if lessThan nixVersion "1.12" then |
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fetchurl ({ inherit url; } // (optionalAttrs (name != null) { inherit name; })) |
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else |
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fetchurl attrs; |
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# Create the final "sources" from the config |
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mkSources = config: |
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mapAttrs ( |
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name: 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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spec // { outPath = replace name (fetch config.pkgs name spec); } |
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) config.sources; |
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mapAttrs |
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( |
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name: spec: |
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if builtins.hasAttr "outPath" spec |
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then |
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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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spec // { outPath = replace name (fetch config.pkgs name spec); } |
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) |
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config.sources; |
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# The "config" used by the fetchers |
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mkConfig = |
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{ sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null |
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, sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile) |
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, sources ? if sourcesFile == null then { } else builtins.fromJSON (builtins.readFile sourcesFile) |
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, system ? builtins.currentSystem |
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, pkgs ? mkPkgs sources system |
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}: rec { |
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@ -171,4 +195,4 @@ let |
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}; |
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in |
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mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); } |
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mkSources (mkConfig { }) // { __functor = _: settings: mkSources (mkConfig settings); } |
Sergey Vlasov
2 months ago
GitHub