diff options
| author | V3n3RiX <venerix@redcorelinux.org> | 2017-10-09 18:53:29 +0100 |
|---|---|---|
| committer | V3n3RiX <venerix@redcorelinux.org> | 2017-10-09 18:53:29 +0100 |
| commit | 4f2d7949f03e1c198bc888f2d05f421d35c57e21 (patch) | |
| tree | ba5f07bf3f9d22d82e54a462313f5d244036c768 /dev-haskell/fclabels/metadata.xml | |
reinit the tree, so we can have metadata
Diffstat (limited to 'dev-haskell/fclabels/metadata.xml')
| -rw-r--r-- | dev-haskell/fclabels/metadata.xml | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/dev-haskell/fclabels/metadata.xml b/dev-haskell/fclabels/metadata.xml new file mode 100644 index 000000000000..84d3d0c77894 --- /dev/null +++ b/dev-haskell/fclabels/metadata.xml @@ -0,0 +1,32 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd"> +<pkgmetadata> + <maintainer type="project"> + <email>haskell@gentoo.org</email> + <name>Gentoo Haskell</name> + </maintainer> + <longdescription> + This package provides first class labels that can act as + bidirectional record fields. The labels can be derived + automatically using Template Haskell which means you don't have + to write any boilerplate yourself. The labels are implemented as + lenses and are fully composable. Labels can be used to /get/, + /set/ and /modify/ parts of a datatype in a consistent way. + + See "Data.Label" for an introductory explanation. + + Internally lenses are not tied to Haskell functions directly, + but are implemented as arrows. Arrows allow the lenses to be run + in custom computational contexts. This approach allows us to + make partial lenses that point to fields of multi-constructor + datatypes in an elegant way. + + See the "Data.Label.Maybe" module for the use of partial labels. + + > 1.0.3 -> 1.0.4 + > - Bugfix to compile on GHC 6.12 again. + </longdescription> + <upstream> + <remote-id type="github">sebastiaanvisser/fclabels</remote-id> + </upstream> +</pkgmetadata> |