fromSource
lib.fileset.fromSource
Docs pulled from | This Revision | 35 minutes ago
Create a file set with the same files as a lib.sources
-based value.
This does not import any of the files into the store.
This can be used to gradually migrate from lib.sources
-based filtering to lib.fileset
.
A file set can be turned back into a source using toSource
.
File sets cannot represent empty directories.
Turning the result of this function back into a source using toSource
will therefore not preserve empty directories.
Inputs
source
-
1. Function argument
Type
fromSource :: SourceLike -> FileSet
Examples
lib.fileset.fromSource
usage example
# There's no cleanSource-like function for file sets yet,
# but we can just convert cleanSource to a file set and use it that way
toSource {
root = ./.;
fileset = fromSource (lib.sources.cleanSource ./.);
}
# Keeping a previous sourceByRegex (which could be migrated to `lib.fileset.unions`),
# but removing a subdirectory using file set functions
difference
(fromSource (lib.sources.sourceByRegex ./. [
"^README\.md$"
# This regex includes everything in ./doc
"^doc(/.*)?$"
])
./doc/generated
# Use cleanSource, but limit it to only include ./Makefile and files under ./src
intersection
(fromSource (lib.sources.cleanSource ./.))
(unions [
./Makefile
./src
]);