Update cabal-helper to version 0.8.1.2 that supports Cabal (>=1.14 && <1.26 || >=2.0 && <2.5)

Building cabal-helper-0.8.1.2 with Stack failed with 'Dependency cycle detected' error. It seems to be https://github.com/commercialhaskell/stack/issues/4265 Stack bug. As a temporary solution I added source code of cabal-helper package to vendor directory and commented out 'build-tool-depends:  cabal-helper:cabal-helper-wrapper' line in the cabal-helper.cabal file.

1 files changed, 35 insertions, 0 deletions

diff --git a/vendor/cabal-helper-0.8.1.2/src/CabalHelper/Compiletime/Compat/Environment.hs b/vendor/cabal-helper-0.8.1.2/src/CabalHelper/Compiletime/Compat/Environment.hs
new file mode 100644
index 0000000..58bb9ee
--- /dev/null
+++ b/vendor/cabal-helper-0.8.1.2/src/CabalHelper/Compiletime/Compat/Environment.hs
@@ -0,0 +1,35 @@
+-- cabal-helper: Simple interface to Cabal's configuration state
+-- Copyright (C) 2017  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.
+--
+-- 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.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+{-# LANGUAGE CPP #-}
+module CabalHelper.Compiletime.Compat.Environment where
+
+import qualified System.Environment
+#ifndef mingw32_HOST_OS
+import qualified System.Posix.Env (setEnv)
+#endif
+
+lookupEnv :: String -> IO (Maybe String)
+lookupEnv var =
+  do env <- System.Environment.getEnvironment
+     return (lookup var env)
+
+setEnv :: String -> String -> IO ()
+#ifdef mingw32_HOST_OS
+setEnv = System.Environment.setEnv
+#else
+setEnv k v = System.Posix.Env.setEnv k v True
+#endif