Add symlinks to shell.nix

Author: cgrindel

rules_haskell_nix/shell.nix

@@ -0,0 +1,57 @@
+{ pkgs ? import ./nixpkgs { }, docTools ? true, ghcVersion ? "9.2.8" }:
+
+with pkgs;
+mkShell {
+  # XXX: hack for macosX, this flags disable bazel usage of xcode
+  # Note: this is set even for linux so any regression introduced by this flag
+  # will be catched earlier
+  # See: https://github.com/bazelbuild/bazel/issues/4231
+  BAZEL_USE_CPP_ONLY_TOOLCHAIN = 1;
+  TMPDIR = "/tmp";
+
+  GHC_VERSION = ghcVersion;
+
+  # Set UTF-8 local so that run-tests can parse GHC's unicode output.
+  LANG = "C.UTF-8";
+
+  buildInputs = [
+    go
+    nix
+    which
+    perl
+    python3
+    jdk11
+    # For stack_install.
+    stack
+    # Needed for ghcide which expects ghc in PATH.
+    haskell.packages."ghc${ builtins.replaceStrings [ "." ] [ "" ] ghcVersion }".ghc
+    # Needed for @com_github_golang_protobuf, itself needed by buildifier.
+    git
+    # Needed to get correct locale for tests with encoding
+    glibcLocales
+    # to avoid CA certificate failures on macOS CI
+    cacert
+    # Needed for debug/linking_utils
+    binutils
+    # check the start script for problems
+    shellcheck
+    file
+  ] ++ lib.optionals docTools [ graphviz python39Packages.sphinx zip unzip ];
+
+  packages = [ bazel_6 ];
+
+  shellHook = ''
+    # Add nix config flags to .bazelrc.local.
+    #
+    BAZELRC_LOCAL=".bazelrc.local"
+    if [ ! -e "$BAZELRC_LOCAL" ]
+    then
+      echo "[!] It looks like you are using a Nix-based system."
+      echo "In order to build this project, you need to add the two"
+      echo "following host_platform entries to your .bazelrc.local file:"
+      echo
+      echo "build --host_platform=@rules_nixpkgs_core//platforms:host"
+      echo "run --host_platform=@rules_nixpkgs_core//platforms:host"
+    fi
+  '';
+}

rules_haskell_tests/shell.nix

@@ -0,0 +1,57 @@
+{ pkgs ? import ./nixpkgs { }, docTools ? true, ghcVersion ? "9.2.8" }:
+
+with pkgs;
+mkShell {
+  # XXX: hack for macosX, this flags disable bazel usage of xcode
+  # Note: this is set even for linux so any regression introduced by this flag
+  # will be catched earlier
+  # See: https://github.com/bazelbuild/bazel/issues/4231
+  BAZEL_USE_CPP_ONLY_TOOLCHAIN = 1;
+  TMPDIR = "/tmp";
+
+  GHC_VERSION = ghcVersion;
+
+  # Set UTF-8 local so that run-tests can parse GHC's unicode output.
+  LANG = "C.UTF-8";
+
+  buildInputs = [
+    go
+    nix
+    which
+    perl
+    python3
+    jdk11
+    # For stack_install.
+    stack
+    # Needed for ghcide which expects ghc in PATH.
+    haskell.packages."ghc${ builtins.replaceStrings [ "." ] [ "" ] ghcVersion }".ghc
+    # Needed for @com_github_golang_protobuf, itself needed by buildifier.
+    git
+    # Needed to get correct locale for tests with encoding
+    glibcLocales
+    # to avoid CA certificate failures on macOS CI
+    cacert
+    # Needed for debug/linking_utils
+    binutils
+    # check the start script for problems
+    shellcheck
+    file
+  ] ++ lib.optionals docTools [ graphviz python39Packages.sphinx zip unzip ];
+
+  packages = [ bazel_6 ];
+
+  shellHook = ''
+    # Add nix config flags to .bazelrc.local.
+    #
+    BAZELRC_LOCAL=".bazelrc.local"
+    if [ ! -e "$BAZELRC_LOCAL" ]
+    then
+      echo "[!] It looks like you are using a Nix-based system."
+      echo "In order to build this project, you need to add the two"
+      echo "following host_platform entries to your .bazelrc.local file:"
+      echo
+      echo "build --host_platform=@rules_nixpkgs_core//platforms:host"
+      echo "run --host_platform=@rules_nixpkgs_core//platforms:host"
+    fi
+  '';
+}