lix/src/libstore/download.hh

#pragma once

#include "types.hh"
#include <string>

namespace nix {

struct DownloadResult
{
    bool cached;
    string data, etag;
};

DownloadResult downloadFile(string url, string expectedETag = "");

Path downloadFileCached(const string & url, bool unpack);

MakeError(DownloadError, Error)

bool isUri(const string & s);

}
Move curl stuff into a separate file 2015-04-09 10:12:50 +00:00			`#pragma once`

			`#include "types.hh"`
			`#include <string>`

			`namespace nix {`

			`struct DownloadResult`
			`{`
			`bool cached;`
			`string data, etag;`
			`};`

			`DownloadResult downloadFile(string url, string expectedETag = "");`

Allow URLs in the Nix search path E.g. to install "hello" from the latest Nixpkgs: $ nix-build '<nixpkgs>' -A hello -I nixpkgs=https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz Or to install a specific version of NixOS: $ nixos-rebuild switch -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/63def04891a0abc328b1b0b3a78ec02c58f48583.tar.gz 2015-05-05 15:09:42 +00:00			`Path downloadFileCached(const string & url, bool unpack);`

Use cached result if there is a network error 2015-04-09 10:49:13 +00:00			`MakeError(DownloadError, Error)`

nix-env/nix-instantiate/nix-build: Support URIs 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 2015-05-06 12:54:31 +00:00			`bool isUri(const string & s);`

Move curl stuff into a separate file 2015-04-09 10:12:50 +00:00			`}`