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For instance, you can install Firefox from a specific Nixpkgs revision like this: $ nix-env -f https://github.com/NixOS/nixpkgs/archive/63def04891a0abc328b1b0b3a78ec02c58f48583.tar.gz -iA firefox Or build a package from the latest nixpkgs-unstable channel: $ nix-build https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz -A hello
22 lines
331 B
C++
22 lines
331 B
C++
#pragma once
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#include "types.hh"
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#include <string>
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namespace nix {
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struct DownloadResult
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{
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bool cached;
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string data, etag;
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};
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DownloadResult downloadFile(string url, string expectedETag = "");
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Path downloadFileCached(const string & url, bool unpack);
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MakeError(DownloadError, Error)
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bool isUri(const string & s);
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}
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