Add rules_haskell_nix module

This module should be used with bzlmod to install nix based toolchains. This way the main rules_haskell module does not depend on rules_nixpkgs.
tweag · Jun 27, 2023 · be0bf6b · be0bf6b
1 parent 8b5fb22
commit be0bf6b
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Showing 11 changed files with 466 additions and 414 deletions.
diff --git a/.bazelignore b/.bazelignore
@@ -3,3 +3,4 @@ tutorial
 haskell/asterius/npm/node_modules
 registry
 rules_haskell_tests
+rules_haskell_nix
diff --git a/.gitignore b/.gitignore
@@ -1,5 +1,6 @@
 /bazel-*
 /rules_haskell_tests/bazel-*
+/rules_haskell_nix/bazel-*
 .bazelrc.local
 *.swp
 *.swo

diff --git a/haskell/nixpkgs.bzl b/haskell/nixpkgs.bzl
diff --git a/haskell/nixpkgs.bzl b/haskell/nixpkgs.bzl
@@ -0,0 +1 @@
+../rules_haskell_nix/nixpkgs.bzl
diff --git a/rules_haskell_nix/.bazelrc b/rules_haskell_nix/.bazelrc
@@ -0,0 +1,2 @@
+import %workspace%/../.bazelrc.common
+import %workspace%/.bazelrc.bzlmod
diff --git a/rules_haskell_nix/.bazelrc.bzlmod b/rules_haskell_nix/.bazelrc.bzlmod
@@ -0,0 +1,2 @@
+common:bzlmod --experimental_enable_bzlmod
+common:bzlmod --registry=file://%workspace%/../registry --registry=https://bcr.bazel.build
diff --git a/rules_haskell_nix/BUILD.bazel b/rules_haskell_nix/BUILD.bazel
diff --git a/rules_haskell_nix/MODULE.bazel b/rules_haskell_nix/MODULE.bazel
@@ -0,0 +1,28 @@
+module(
+    name = "rules_haskell_nix",
+    version = "0.16",
+)
+
+bazel_dep(
+    name = "rules_haskell",
+    version = "0.16",
+)
+
+bazel_dep(
+    name = "rules_nixpkgs_core",
+    version = "0.9.0",
+)
+
+bazel_dep(
+    name = "rules_nixpkgs_posix",
+    version = "0.9.0",
+)
+
+bazel_dep(
+    name = "platforms",
+    version = "0.0.6",
+)
+
+non_module_deps = use_extension("//:non_module_deps.bzl", "non_module_deps")
+
+use_repo(non_module_deps, "os_info")
diff --git a/rules_haskell_nix/README.md b/rules_haskell_nix/README.md
@@ -0,0 +1,5 @@
+With bzlmod, the [nix functionalities](https://api.haskell.build/haskell/nixpkgs.html) provided by rules_haskell must be 
+accessed via `@rules_haskell_nix//:nixpkgs.bzl`.
+
+This way the main `rules_haskell` module does not have to depend on
+`rules_nixpkgs` when we do not intend to use nix toolchains.
diff --git a/rules_haskell_nix/WORKSPACE b/rules_haskell_nix/WORKSPACE
@@ -0,0 +1 @@
+# This WORKSPACE file is empty because the folder is only used as a repository with bzlmod
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		@@ -0,0 +1,2 @@
		import %workspace%/../.bazelrc.common
		import %workspace%/.bazelrc.bzlmod
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		@@ -0,0 +1,2 @@
		common:bzlmod --experimental_enable_bzlmod
		common:bzlmod --registry=file://%workspace%/../registry --registry=https://bcr.bazel.build
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		@@ -0,0 +1 @@
		# This WORKSPACE file is empty because the folder is only used as a repository with bzlmod