nix-super/src/libexpr/common-opts.hh

#ifndef __COMMON_OPTS_H
#define __COMMON_OPTS_H

#include "eval.hh"


namespace nix {

/* Some common option parsing between nix-env and nix-instantiate. */
bool parseOptionArg(const string & arg, Strings::iterator & i,
    const Strings::iterator & argsEnd, EvalState & state,
    Bindings & autoArgs);
    
bool parseSearchPathArg(const string & arg, Strings::iterator & i,
    const Strings::iterator & argsEnd, EvalState & state);

Path lookupFileArg(EvalState & state, string s);

}


#endif /* !__COMMON_OPTS_H */
* Option --argstr for passing string arguments easily. (NIX-75) 2007-01-14 14:32:44 +02:00			`#ifndef __COMMON_OPTS_H`
			`#define __COMMON_OPTS_H`

			`#include "eval.hh"`


			`namespace nix {`

			`/* Some common option parsing between nix-env and nix-instantiate. */`
			`bool parseOptionArg(const string & arg, Strings::iterator & i,`
			`const Strings::iterator & argsEnd, EvalState & state,`
* Update autoCallFunction() and findAlongAttrPath(). 2010-04-07 18:47:06 +03:00			`Bindings & autoArgs);`
* Option --argstr for passing string arguments easily. (NIX-75) 2007-01-14 14:32:44 +02:00
* Add a Nix expression search path feature. Paths between angle brackets, e.g. import <nixpkgs/pkgs/lib> are resolved by looking them up relative to the elements listed in the search path. This allows us to get rid of hacks like import "${builtins.getEnv "NIXPKGS_ALL"}/pkgs/lib" The search path can be specified through the ‘-I’ command-line flag and through the colon-separated ‘NIX_PATH’ environment variable, e.g., $ nix-build -I /etc/nixos ... If a file is not found in the search path, an error message is lazily thrown. 2011-08-06 19:05:24 +03:00			`bool parseSearchPathArg(const string & arg, Strings::iterator & i,`
			`const Strings::iterator & argsEnd, EvalState & state);`

* Allow '<nixexpr>' syntax to be used in nix-instantiate, nix-build and nix-env, e.g., $ nix-env -f '<nixpkgs>' -i patchelf or $ nix-build '<nixos/tests>' -A login.test 2011-12-01 18:41:43 +02:00			`Path lookupFileArg(EvalState & state, string s);`

* Option --argstr for passing string arguments easily. (NIX-75) 2007-01-14 14:32:44 +02:00			`}`


			`#endif /* !__COMMON_OPTS_H */`