add support for nix

README.md

@@ -52,6 +52,26 @@ stack build
 stack exec -- grin grin/grin/opt-stages-high-level/stage-00.grin
 ```
 
+## nix
+
+To get a nix shell with all the required dependencies do the following in the top level folder.
+
+```
+nix-shell
+```
+
+To run the example do the following from the top level folder.
+
+```
+(cd grin; cabal run grin -- grin/opt-stages-high-level/stage-00.grin)
+```
+
+To run a local Hoogle server with Haskell documentation do the following.
+
+```
+hoogle server --port 8087 1>/dev/null 2>/dev/null&
+```
+
 ## Example Front-End
 
 Read about how to <a href="http://nbviewer.jupyter.org/github/grin-tech/grin/blob/master/papers/boquist.pdf#page=64">generate GRIN code</a> from a frontend language.

grin/default.nix

@@ -0,0 +1,40 @@
+{ mkDerivation, ansi-wl-pprint, base, bimap, bytestring, comonad
+, containers, criterion, deepseq, directory, extra, filepath, free
+, functor-infix, generic-random, ghc, ghc-paths, haskeline, hspec
+, hspec-discover, idris, llvm-hs, llvm-hs-pretty, llvm-hs-pure
+, logict, megaparsec, microlens, microlens-mtl, microlens-platform
+, microlens-th, monad-gen, mtl, neat-interpolation
+, optparse-applicative, pretty-show, pretty-simple, process
+, QuickCheck, recursion-schemes, stdenv, template-haskell, text
+, transformers, unix, vector
+}:
+mkDerivation {
+  pname = "grin";
+  version = "0.1.0.0";
+  src = ./.;
+  isLibrary = true;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    ansi-wl-pprint base bimap bytestring comonad containers deepseq
+    directory extra filepath free functor-infix generic-random ghc
+    hspec idris llvm-hs llvm-hs-pretty llvm-hs-pure logict megaparsec
+    microlens microlens-mtl microlens-platform microlens-th monad-gen
+    mtl neat-interpolation optparse-applicative pretty-show
+    pretty-simple process QuickCheck recursion-schemes template-haskell
+    text transformers vector
+  ];
+  executableHaskellDepends = [
+    ansi-wl-pprint base containers directory filepath ghc ghc-paths
+    haskeline idris llvm-hs-pretty megaparsec microlens microlens-mtl
+    microlens-platform microlens-th mtl optparse-applicative
+    pretty-show pretty-simple process recursion-schemes text
+    transformers unix
+  ];
+  testHaskellDepends = [
+    base containers deepseq functor-infix hspec hspec-discover
+    QuickCheck vector
+  ];
+  benchmarkHaskellDepends = [ base criterion ];
+  homepage = "https://github.com/githubuser/grin#readme";
+  license = stdenv.lib.licenses.bsd3;
+}

nix/free.nix

@@ -0,0 +1,20 @@
+{ mkDerivation, base, bifunctors, comonad, containers, distributive
+, exceptions, mtl, prelude-extras, profunctors, semigroupoids
+, semigroups, stdenv, template-haskell, transformers
+, transformers-compat
+}:
+mkDerivation {
+  pname = "free";
+  version = "4.12.4";
+  sha256 = "c9fe45aae387855626ecb5a0fea6afdb207143cb00af3b1f715d1032d2d08784";
+  revision = "2";
+  editedCabalFile = "0gmib9bmswrqhl47cp5b871v9f44v9yidzxpljkszy49y9qdf560";
+  libraryHaskellDepends = [
+    base bifunctors comonad containers distributive exceptions mtl
+    prelude-extras profunctors semigroupoids semigroups
+    template-haskell transformers transformers-compat
+  ];
+  homepage = "http://github.com/ekmett/free/";
+  description = "Monads for free";
+  license = stdenv.lib.licenses.bsd3;
+}

nix/llvm-hs-pretty.nix

@@ -0,0 +1,20 @@
+{ mkDerivation, array, base, bytestring, directory, filepath
+, llvm-hs, llvm-hs-pure, mtl, pretty-show, stdenv, tasty
+, tasty-golden, tasty-hspec, tasty-hunit, text, transformers
+, wl-pprint-text
+}:
+mkDerivation {
+  pname = "llvm-hs-pretty";
+  version = "0.2.0.0";
+  sha256 = "90ce478f6386f836e3b646186c4fe4d72598cc938d8fbb150718a1bbf4f4738c";
+  libraryHaskellDepends = [
+    array base bytestring llvm-hs-pure text wl-pprint-text
+  ];
+  testHaskellDepends = [
+    base directory filepath llvm-hs llvm-hs-pure mtl pretty-show tasty
+    tasty-golden tasty-hspec tasty-hunit text transformers
+  ];
+  homepage = "https://github.com/llvm-hs/llvm-hs-pretty";
+  description = "Pretty printer for LLVM IR";
+  license = stdenv.lib.licenses.mit;
+}

nix/llvm-hs-pure.nix

@@ -0,0 +1,20 @@
+{ mkDerivation, attoparsec, base, bytestring, containers, fail
+, hspec, mtl, stdenv, tasty, tasty-hunit, tasty-quickcheck
+, template-haskell, text, transformers, unordered-containers
+}:
+mkDerivation {
+  pname = "llvm-hs-pure";
+  version = "5.1.2";
+  sha256 = "c4d0993aacda72107e6d34865421f128b8c27b586b95a68e2a3e94700645d954";
+  libraryHaskellDepends = [
+    attoparsec base bytestring containers fail mtl template-haskell
+    transformers unordered-containers
+  ];
+  testHaskellDepends = [
+    base bytestring containers hspec mtl tasty tasty-hunit
+    tasty-quickcheck text transformers unordered-containers
+  ];
+  homepage = "http://github.com/llvm-hs/llvm-hs/";
+  description = "Pure Haskell LLVM functionality (no FFI)";
+  license = stdenv.lib.licenses.bsd3;
+}

nix/llvm-hs.nix

@@ -0,0 +1,26 @@
+{ mkDerivation, array, attoparsec, base, bytestring, Cabal
+, containers, exceptions, llvm-config, llvm-hs-pure, mtl
+, pretty-show, QuickCheck, stdenv, tasty, tasty-hunit
+, tasty-quickcheck, template-haskell, temporary, transformers
+, utf8-string
+}:
+mkDerivation {
+  pname = "llvm-hs";
+  version = "5.1.3";
+  sha256 = "ccdac4683f56135ba83ed0883231f686d1784e9bc7f072a34fcf041e0661976b";
+  revision = "1";
+  editedCabalFile = "0r8xgz6r2miw1l3az343jwz8f9jgzqywxnzl2xhanv05g3i462yh";
+  setupHaskellDepends = [ base Cabal containers ];
+  libraryHaskellDepends = [
+    array attoparsec base bytestring containers exceptions llvm-hs-pure
+    mtl template-haskell transformers utf8-string
+  ];
+  libraryToolDepends = [ llvm-config ];
+  testHaskellDepends = [
+    base bytestring containers llvm-hs-pure mtl pretty-show QuickCheck
+    tasty tasty-hunit tasty-quickcheck temporary transformers
+  ];
+  homepage = "http://github.com/llvm-hs/llvm-hs/";
+  description = "General purpose LLVM bindings";
+  license = stdenv.lib.licenses.bsd3;
+}

shell.nix

@@ -0,0 +1,74 @@
+{ fetchFromGitHub ? (import <nixpkgs> {}).fetchFromGitHub
+# peg nix packages to specific version
+, pkgs ?
+    import
+      ( fetchFromGitHub
+        {
+          owner = "NixOS";
+          repo = "nixpkgs-channels";
+          rev = "696c6bed4e8e2d9fd9b956dea7e5d49531e9d13f";
+          sha256 = "1v3yrpj542niyxp0h3kffsdjwlrkvj0mg4ljb85d142gyn3sdzd4";
+        }
+      ) {}
+}:
+let
+    # extract the Haskell dependencies of a package
+    extractHaskellDependencies = (hpkg:
+        with builtins;
+        let
+          isHaskellPkg = x: (isAttrs x) && (x ? pname) && (x ? version) && (x ? env);
+          packagesFromDrv = x:
+            let
+              inputs =
+                (x.buildInputs or []) ++
+                (x.nativeBuildInputs or []) ++
+                (x.propagatedBuildInputs or []) ++
+                (x.propagatedNativeBuildInputs or []);
+
+            in
+              (filter isHaskellPkg  inputs);
+          go1 = s: xs: foldl' go2 s xs;
+          go2 = s: x:
+            if s ? "${x.pname}"
+               then s
+               else go1 (s // {"${x.pname}" = x;}) (packagesFromDrv x);
+        in assert isAttrs hpkg; attrNames (go1 {} (packagesFromDrv hpkg)));
+
+        # Haskell custom overrides
+        haskellPackages = pkgs.haskell.packages.ghc822.override (old:
+        { overrides = self: super:
+            {
+              free = self.callPackage ./nix/free.nix {};
+              functor-infix = pkgs.haskell.lib.doJailbreak (super.functor-infix);
+              llvm-hs = self.callPackage ./nix/llvm-hs.nix {llvm-config = pkgs.llvm_5;};
+              llvm-hs-pure = self.callPackage ./nix/llvm-hs-pure.nix {};
+              llvm-hs-pretty = pkgs.haskell.lib.dontCheck (self.callPackage ./nix/llvm-hs-pretty.nix {});
+            };
+        });
+
+    # the grin package
+    grin = pkgs.haskellPackages.callPackage ./grin {};
+    # grin's dependencies
+    grinDeps = extractHaskellDependencies grin;
+    # use a GHC with all the Hakell dependencies and the documentation for them and a Hoogle server to search them
+    ghcWith = haskellPackages.ghcWithHoogle (hs: map (x: builtins.getAttr x hs) grinDeps);
+
+    llc5 = pkgs.runCommand "llc5"
+      {
+        buildInputs = [pkgs.llvm_5];
+      }
+      ''
+        mkdir -p $out/bin
+        cd $out/bin
+        ln -s ${pkgs.llvm_5}/bin/llc llc-5.0
+      '';
+in
+# environment setup with all the needed tools
+pkgs.runCommand "grin-shell"
+      {
+        shellHook = ''
+          eval $(egrep ^export ${ghcWith}/bin/ghc)
+         '';
+        buildInputs = [ghcWith llc5 pkgs.llvm_5 haskellPackages.cabal-install];
+      }
+      "touch $out"