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Make <nix/fetchurl.nix> a builtin builder
This ensures that 1) the derivation doesn't change when Nix changes; 2) the derivation closure doesn't contain Nix and its dependencies; 3) we don't have to rely on ugly chroot hacks.
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,24 @@ | ||
#include "builtins.hh" | ||
#include "download.hh" | ||
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namespace nix { | ||
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void builtinFetchurl(const BasicDerivation & drv) | ||
{ | ||
auto url = drv.env.find("url"); | ||
if (url == drv.env.end()) throw Error("attribute ‘url’ missing"); | ||
printMsg(lvlInfo, format("downloading ‘%1%’...") % url->second); | ||
auto data = downloadFile(url->second); // FIXME: show progress | ||
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auto out = drv.env.find("out"); | ||
if (out == drv.env.end()) throw Error("attribute ‘url’ missing"); | ||
writeFile(out->second, data.data); | ||
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auto executable = drv.env.find("out"); | ||
if (executable != drv.env.end() && executable->second == "1") { | ||
if (chmod(out->second.c_str(), 0755) == -1) | ||
throw SysError(format("making ‘%1%’ executable") % out->second); | ||
} | ||
} | ||
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} |
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Original file line number | Diff line number | Diff line change |
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#pragma once | ||
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#include "derivations.hh" | ||
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namespace nix { | ||
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void builtinFetchurl(const BasicDerivation & drv); | ||
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} |
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