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* Add a Nix expression search path feature. Paths between angle

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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.
This commit is contained in:
Eelco Dolstra 2011-08-06 16:05:24 +00:00
parent 54945a2950
commit 1ecc97b6bd
24 changed files with 98 additions and 9 deletions
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4
scripts/nix-build.in
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@ -76,10 +76,10 @@ EOF
$outLink = $ARGV[$n];
}
elsif ($arg eq "--attr" or $arg eq "-A") {
elsif ($arg eq "--attr" or $arg eq "-A" or $arg eq "-I") {
$n++;
die "$0: `$arg' requires an argument\n" unless $n < scalar @ARGV;
push @instArgs, ("--attr", $ARGV[$n]);
push @instArgs, ($arg, $ARGV[$n]);
}
elsif ($arg eq "--arg" || $arg eq "--argstr") {