Change license to Apache2

All contributors have agreed on public record at

    https://github.com/DanielG/cabal-helper/issues/76

Fixes #76

3 files changed, 15 insertions, 30 deletions

diff --git a/src/CabalHelper/Runtime/Compat.hs b/src/CabalHelper/Runtime/Compat.hs
index d3fe5e6..3582766 100644
--- a/src/CabalHelper/Runtime/Compat.hs
+++ b/src/CabalHelper/Runtime/Compat.hs
@@ -1,18 +1,13 @@
 -- cabal-helper: Simple interface to Cabal's configuration state
 -- Copyright (C) 2015-2018  Daniel Gröber <cabal-helper@dxld.at>
 --
--- This program is free software: you can redistribute it and/or modify
--- it under the terms of the GNU General Public License as published by
--- the Free Software Foundation, either version 3 of the License, or
--- (at your option) any later version.
+-- SPDX-License-Identifier: Apache-2.0
 --
--- This program is distributed in the hope that it will be useful,
--- but WITHOUT ANY WARRANTY; without even the implied warranty of
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--- GNU General Public License for more details.
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
 --
--- You should have received a copy of the GNU General Public License
--- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+--     http://www.apache.org/licenses/LICENSE-2.0
 
 {-# LANGUAGE CPP, BangPatterns, RecordWildCards, RankNTypes, ViewPatterns,
   TupleSections #-}
diff --git a/src/CabalHelper/Runtime/HelperMain.hs b/src/CabalHelper/Runtime/HelperMain.hs
index 08cb9c5..9c4d557 100644
--- a/src/CabalHelper/Runtime/HelperMain.hs
+++ b/src/CabalHelper/Runtime/HelperMain.hs
@@ -1,18 +1,13 @@
 -- cabal-helper: Simple interface to Cabal's configuration state
 -- Copyright (C) 2015-2018  Daniel Gröber <cabal-helper@dxld.at>
 --
--- This program is free software: you can redistribute it and/or modify
--- it under the terms of the GNU General Public License as published by
--- the Free Software Foundation, either version 3 of the License, or
--- (at your option) any later version.
+-- SPDX-License-Identifier: Apache-2.0
 --
--- This program is distributed in the hope that it will be useful,
--- but WITHOUT ANY WARRANTY; without even the implied warranty of
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--- GNU General Public License for more details.
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
 --
--- You should have received a copy of the GNU General Public License
--- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+--     http://www.apache.org/licenses/LICENSE-2.0
 
 {-# LANGUAGE CPP, BangPatterns, RecordWildCards, RankNTypes, ViewPatterns,
   TupleSections #-}
diff --git a/src/CabalHelper/Runtime/Main.hs b/src/CabalHelper/Runtime/Main.hs
index 71dfd9b..2a13c84 100644
--- a/src/CabalHelper/Runtime/Main.hs
+++ b/src/CabalHelper/Runtime/Main.hs
@@ -1,18 +1,13 @@
 -- cabal-helper: Simple interface to Cabal's configuration state
 -- Copyright (C) 2018  Daniel Gröber <cabal-helper@dxld.at>
 --
--- This program is free software: you can redistribute it and/or modify
--- it under the terms of the GNU General Public License as published by
--- the Free Software Foundation, either version 3 of the License, or
--- (at your option) any later version.
+-- SPDX-License-Identifier: Apache-2.0
 --
--- This program is distributed in the hope that it will be useful,
--- but WITHOUT ANY WARRANTY; without even the implied warranty of
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--- GNU General Public License for more details.
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
 --
--- You should have received a copy of the GNU General Public License
--- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+--     http://www.apache.org/licenses/LICENSE-2.0
 
 import CabalHelper.Runtime.HelperMain (helper_main)
 import System.Environment