Switch to using cabal

.gitignore

@@ -1,3 +1,3 @@
-free-monad-example.cabal
 .stack-work/
+dist-newstyle
 *~

free-monad-example.cabal

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+cabal-version:      1.12
+name:               free-monad-example
+version:            0.1.0.0
+description:
+  Please see the README on GitHub at <https://github.com/sanchayanmaity/free-monad-example#readme>
+
+homepage:           https://github.com/sanchayanmaity/free-monad-example#readme
+bug-reports:        https://github.com/sanchayanmaity/free-monad-example/issues
+author:             Sanchayan Maity
+maintainer:         maitysanchayan@gmail.com
+copyright:          2020 Sanchayan Maity
+license:            BSD3
+license-file:       LICENSE
+build-type:         Simple
+extra-source-files: README.md
+
+source-repository head
+  type:     git
+  location: https://github.com/sanchayanmaity/free-monad-example
+
+library
+  exposed-modules:
+    DB.Interpreter
+    DB.Language
+    Lib
+    Logger.Interpreter
+    Logger.Language
+
+  other-modules:    Paths_free_monad_example
+  hs-source-dirs:   src
+  ghc-options:      -Wall -Wunused-binds
+  build-depends:
+      base               >=4.7 && <5
+    , free
+    , postgresql-simple
+    , text
+
+  default-language: Haskell2010
+
+executable free-monad-example-exe
+  main-is:          Main.hs
+  other-modules:    Paths_free_monad_example
+  hs-source-dirs:   app
+  ghc-options:      -Wall -Wunused-binds -threaded -rtsopts -with-rtsopts=-N
+  build-depends:
+      base                >=4.7 && <5
+    , free
+    , free-monad-example
+    , postgresql-simple
+    , text
+
+  default-language: Haskell2010
+
+test-suite free-monad-example-test
+  type:             exitcode-stdio-1.0
+  main-is:          Spec.hs
+  other-modules:    Paths_free_monad_example
+  hs-source-dirs:   test
+  ghc-options:      -Wall -Wunused-binds -threaded -rtsopts -with-rtsopts=-N
+  build-depends:
+      base                >=4.7 && <5
+    , free
+    , free-monad-example
+    , postgresql-simple
+    , text
+
+  default-language: Haskell2010

hie.yaml

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-cradle:
-  stack:
-    - path: "./src"
-      component: "free-monad-example:lib"
-
-    - path: "./app/Main.hs"
-      component: "free-monad-example:exe:free-monad-example-exe"
-
-    - path: "./app/Paths_free_monad_example.hs"
-      component: "free-monad-example:exe:free-monad-example-exe"
-
-    - path: "./test"
-      component: "free-monad-example:test:free-monad-example-test"

stack.yaml

@@ -1,66 +0,0 @@
-# This file was automatically generated by 'stack init'
-#
-# Some commonly used options have been documented as comments in this file.
-# For advanced use and comprehensive documentation of the format, please see:
-# https://docs.haskellstack.org/en/stable/yaml_configuration/
-
-# Resolver to choose a 'specific' stackage snapshot or a compiler version.
-# A snapshot resolver dictates the compiler version and the set of packages
-# to be used for project dependencies. For example:
-#
-# resolver: lts-3.5
-# resolver: nightly-2015-09-21
-# resolver: ghc-7.10.2
-#
-# The location of a snapshot can be provided as a file or url. Stack assumes
-# a snapshot provided as a file might change, whereas a url resource does not.
-#
-# resolver: ./custom-snapshot.yaml
-# resolver: https://example.com/snapshots/2018-01-01.yaml
-resolver: lts-17.4
-
-# User packages to be built.
-# Various formats can be used as shown in the example below.
-#
-# packages:
-# - some-directory
-# - https://example.com/foo/bar/baz-0.0.2.tar.gz
-#   subdirs:
-#   - auto-update
-#   - wai
-packages:
-- .
-# Dependency packages to be pulled from upstream that are not in the resolver.
-# These entries can reference officially published versions as well as
-# forks / in-progress versions pinned to a git hash. For example:
-#
-# extra-deps:
-# - acme-missiles-0.3
-# - git: https://github.com/commercialhaskell/stack.git
-#   commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
-#
-# extra-deps: []
-
-# Override default flag values for local packages and extra-deps
-# flags: {}
-
-# Extra package databases containing global packages
-# extra-package-dbs: []
-
-# Control whether we use the GHC we find on the path
-# system-ghc: true
-#
-# Require a specific version of stack, using version ranges
-# require-stack-version: -any # Default
-# require-stack-version: ">=2.3"
-#
-# Override the architecture used by stack, especially useful on Windows
-# arch: i386
-# arch: x86_64
-#
-# Extra directories used by stack for building
-# extra-include-dirs: [/path/to/dir]
-# extra-lib-dirs: [/path/to/dir]
-#
-# Allow a newer minor version of GHC than the snapshot specifies
-# compiler-check: newer-minor

stack.yaml.lock

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-# This file was autogenerated by Stack.
-# You should not edit this file by hand.
-# For more information, please see the documentation at:
-#   https://docs.haskellstack.org/en/stable/lock_files
-
-packages: []
-snapshots:
-- completed:
-    size: 563103
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/17/4.yaml
-    sha256: f11e2153044f5f71ea7b1c9398f4721f517c9bd37642ed769647b896564021f3
-  original: lts-17.4