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nix-gh/tests/filter-source.nix.in

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* New primop builtins.filterSource, which can be used to filter files from a source directory. All files for which a predicate function returns true are copied to the store. Typical example is to leave out the .svn directory: stdenv.mkDerivation { ... src = builtins.filterSource (path: baseNameOf (toString path) != ".svn") ./source-dir; # as opposed to # src = ./source-dir; } This is important because the .svn directory influences the hash in a rather unpredictable and variable way.
2006-12-13 00:05:01 +01:00
derivation {
name = "filter";
system = "@system@";
builder = "@shell@";
args = ["-e" "-x" (builtins.toFile "builder" "PATH=@testPath@; ln -s $input $out")];
* builtins.filterSource: pass the type of the file ("regular", "directory", "symlink") as the second argument to the filter predicate.
2007-01-15 09:54:51 +01:00
input =
New primitives: * `sub' to subtract two numbers. * `stringLength' to get the length of a string. * `substring' to get a substring of a string. These should be enough to allow most string operations to be expressed.
2007-01-29 15:23:09 +01:00
let filter = path: type:
type != "symlink"
&& baseNameOf path != "foo"
&& !((import ./lang/lib.nix).hasSuffix ".bak" (baseNameOf path));
* builtins.filterSource: pass the type of the file ("regular", "directory", "symlink") as the second argument to the filter predicate.
2007-01-15 09:54:51 +01:00
in builtins.filterSource filter ./test-tmp/filterin;
* New primop builtins.filterSource, which can be used to filter files from a source directory. All files for which a predicate function returns true are copied to the store. Typical example is to leave out the .svn directory: stdenv.mkDerivation { ... src = builtins.filterSource (path: baseNameOf (toString path) != ".svn") ./source-dir; # as opposed to # src = ./source-dir; } This is important because the .svn directory influences the hash in a rather unpredictable and variable way.
2006-12-13 00:05:01 +01:00
}