45a7f8cbb7
Users can now supply additional headers for URL imports using the new `using` keyword, like this: ```haskell http://example.com using ./headers ``` ... where `./headers` must be a value of type: ```haskell { header : Text, value : Text } ``` The argument to `using` must be an import (such as a file, URL, or env import) and cannot be an inline Dhall expression. There are two reasons why: * The header expression is resolved, type-checked, and normalized in a separate phase preceding the import of the corresponding URL so it does not have access to bound variables in scop * This restriction greatly simplifies the implementation Also, headers are automatically forwarded to relative imports, so if you import a URL like this: ```haskell http://example.com using ./headers ``` ... and that serves a file like: ```haskell ./foo ``` ... then Dhall will import `http://example.com/foo` using the same `./headers`.
26 lines
961 B
Nix
26 lines
961 B
Nix
{ mkDerivation, ansi-wl-pprint, base, bytestring, case-insensitive
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, charset, containers, http-client, http-client-tls, lens
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, neat-interpolation, optparse-generic, parsers, stdenv
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, system-fileio, system-filepath, tasty, tasty-hunit, text
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, text-format, transformers, trifecta, unordered-containers, vector
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}:
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mkDerivation {
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pname = "dhall";
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version = "1.3.0";
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src = ./.;
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isLibrary = true;
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isExecutable = true;
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libraryHaskellDepends = [
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ansi-wl-pprint base bytestring case-insensitive charset containers
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http-client http-client-tls lens neat-interpolation parsers
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system-fileio system-filepath text text-format transformers
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trifecta unordered-containers vector
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];
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executableHaskellDepends = [ base optparse-generic text trifecta ];
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testHaskellDepends = [
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base neat-interpolation tasty tasty-hunit text vector
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];
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description = "A configuration language guaranteed to terminate";
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license = stdenv.lib.licenses.bsd3;
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}
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