%global         pkg_name  happy-lib
%global         debug_package %{nil}
%global         pkg_version 2.1.3

Name:           ghc-%{pkg_name}
Version:        %{pkg_version}
Release:        1
Summary:        Happy is a parser generator for Haskell implemented using this library
License:        BSD-2-Clause
URL:            https://hackage.haskell.org/package/happy-lib
Source0:        https://hackage.haskell.org/package/happy-lib-%{pkg_version}/happy-lib-%{pkg_version}.tar.gz
Patch0:         0001-Add-Setup-hs.patch 

BuildRequires:  chrpath
BuildRequires:  ghc-bootstrap

%description
Happy is a parser generator for Haskell. Given a grammar specification in BNF, Happy generates Haskell code to parse the grammar. Happy works in a similar way to the yacc tool for C.
This library provides the following functionality:
- Data type definitions for the Grammar AST type, capturing the information in .y-files (Happy.Grammar)
- A parser for happy grammar files (.y) to produce a Grammar (Happy.Frontend.*)
- Implementations of the text book algorithms that compute the LR action and goto tables for the given Grammar (Happy.Tabular.*)
- An LALR code generator to produce table-driven, deterministic parsing code in Haskell (Happy.Backend.LALR.*)
- A (less maintained) GLR code generator to produce table-driven, non-deterministic parsing code in Haskell, where ambiguous parses produce multiple parse trees (Happy.Backend.GLR.*)
This Package is Only for ghc-bootstrap-tools, DO NOT USE IS SEPARATELY.

%prep
%setup -q -n %{pkg_name}-%{version}
%patch -P0 -p1

%build
export PATH=/opt/bin:$PATH
ghc -dynamic Setup.hs -o cabal
./cabal configure --prefix=%{_prefix}
./cabal build

%install
./cabal copy --destdir=%{buildroot}

%files
%defattr (-,root,root,-)
%dir %{_prefix}/lib/
%dir %{_prefix}/share/

%changelog
* Wed Dec 11 2024 ZhaoYu Jiang <jiangzhaoyu@kylinos.cn> - 2.1.3-1
- Initial Package ghc-happy-lib only for ghc-bootstrap-tools.