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Fetchers

fetchUrl

Fetch a file from the specified URL.

Types:

  • fetchUrl (function { ... } -> package):
    • url (str): URL to download.
    • sha256 (str): SHA256 of the expected output, In order to get the SHA256 you can omit this parameter and execute Makes, Makes will tell you the correct SHA256 on failure.

Example:

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# /path/to/my/project/makes/example/main.nix
{
  fetchUrl,
  ...
}:
fetchUrl {
  url = "https://github.com/fluidattacks/makes/blob/16aafa1e3ed4cc99eb354842341fbf6f478a211c/README.md";
  sha256 = "18scrymrar0bv7s92hfqfb01bv5pibyjw6dxp3i8nylmnh6gjv15";
}

fetchArchive

Fetch a Zip (.zip) or Tape Archive (.tar) from the specified URL and unpack it.

Types:

  • fetchArchive (function { ... } -> package):
    • url (str): URL to download.
    • sha256 (str): SHA256 of the expected output, In order to get the SHA256 you can omit this parameter and execute Makes, Makes will tell you the correct SHA256 on failure.
    • stripRoot (bool): Optional. Most archives have a symbolic top-level directory that is discarded during unpack phase. If this is not the case you can set this flag to false. Defaults to true.

Example:

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# /path/to/my/project/makes/example/main.nix
{
  fetchArchive,
  ...
}:
fetchArchive {
  url = "https://github.com/fluidattacks/makes/archive/16aafa1e3ed4cc99eb354842341fbf6f478a211c.zip";
  sha256 = "16zx89lzv5n048h5l9f8dgpvdj0l38hx7aapc7h1d1mjc1ca2i6a";
}

fetchNixpkgs

Fetch a commit from the Nixpkgs repository.

Warning

By default all licenses in the Nixpkgs repository are accepted. Options to decline individual licenses are provided below.

Types:

  • fetchNixpkgs (function { ... } -> anything):
    • rev (str): Commit, branch or tag to fetch.
    • allowUnfree (bool): Optional. Allow software that do not respect the freedom of its users. Defaults to true.
    • acceptAndroidSdkLicense (bool): Optional. Accept the Android SDK license. Defaults to true.
    • overalys (listOf overlayType): Optional. Overlays to apply to the Nixpkgs set. Defaults to [ ].
    • sha256 (str): SHA256 of the expected output, In order to get the SHA256 you can omit this parameter and execute Makes, Makes will tell you the correct SHA256 on failure.

Example:

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# /path/to/my/project/makes/example/main.nix
{
  fetchNixpkgs,
  ...
}:
let nixpkgs = fetchNixpkgs {
  rev = "f88fc7a04249cf230377dd11e04bf125d45e9abe";
  sha256 = "1dkwcsgwyi76s1dqbrxll83a232h9ljwn4cps88w9fam68rf8qv3";
};
in
nixpkgs.awscli

fetchRubyGem

Fetch a Ruby gem from RubyGems.

Types:

  • fetchRubyGem (function { ... } -> package):
    • sha256 (str): SHA256 of the expected output, In order to get the SHA256 you can omit this parameter and execute Makes, Makes will tell you the correct SHA256 on failure.
    • url (str): url of the gem to download.

Example:

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# /path/to/my/project/makes/example/main.nix
{
  fetchRubyGem,
  ...
}:
fetchRubyGem {
  sha256 = "04nc8x27hlzlrr5c2gn7mar4vdr0apw5xg22wp6m8dx3wqr04a0y";
  url = "https://rubygems.org/downloads/ast-2.4.2.gem";
}