2018-01-16 18:07:27 +00:00
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{ system ? "" # obsolete
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2015-10-30 10:27:47 +00:00
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, url
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2020-11-18 04:20:50 +00:00
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, hash ? "" # an SRI hash
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2018-12-13 13:30:52 +00:00
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# Legacy hash specification
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2017-07-04 12:45:50 +00:00
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, md5 ? "", sha1 ? "", sha256 ? "", sha512 ? ""
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2017-02-16 13:06:47 +00:00
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, outputHash ?
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2018-12-13 13:30:52 +00:00
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if hash != "" then hash else if sha512 != "" then sha512 else if sha1 != "" then sha1 else if md5 != "" then md5 else sha256
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2017-02-16 13:06:47 +00:00
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, outputHashAlgo ?
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2018-12-13 13:30:52 +00:00
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if hash != "" then "" else if sha512 != "" then "sha512" else if sha1 != "" then "sha1" else if md5 != "" then "md5" else "sha256"
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2015-10-30 10:27:47 +00:00
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, executable ? false
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, unpack ? false
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, name ? baseNameOf (toString url)
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2022-09-16 08:51:14 +00:00
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, impure ? false
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2015-10-30 10:27:47 +00:00
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}:
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2012-07-08 14:19:17 +00:00
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2022-09-16 07:47:54 +00:00
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derivation ({
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2015-07-20 02:30:16 +00:00
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builder = "builtin:fetchurl";
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2012-07-08 14:19:17 +00:00
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# New-style output content requirements.
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2015-10-30 10:27:47 +00:00
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outputHashMode = if unpack || executable then "recursive" else "flat";
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2015-03-24 10:15:45 +00:00
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2018-01-16 18:07:27 +00:00
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inherit name url executable unpack;
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system = "builtin";
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2012-07-08 15:11:02 +00:00
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# No need to double the amount of network traffic
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preferLocalBuild = true;
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2014-07-16 05:11:24 +00:00
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impureEnvVars = [
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# We borrow these environment variables from the caller to allow
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# easy proxy configuration. This is impure, but a fixed-output
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# derivation like fetchurl is allowed to do so since its result is
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# by definition pure.
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"http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"
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];
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2016-09-22 13:48:14 +00:00
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# To make "nix-prefetch-url" work.
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urls = [ url ];
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2022-09-16 08:52:20 +00:00
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} // (if impure
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then { __impure = true; }
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2022-09-16 07:47:54 +00:00
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else { inherit outputHashAlgo outputHash; }))
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