From 19f4abd55b0d25b61feb75ff4447b75490fe0700 Mon Sep 17 00:00:00 2001
From: Rin Kuryloski <kuryloskip@vmware.com>
Date: Thu, 4 May 2023 08:31:54 +0200
Subject: Build cli deps as .ez archives

This provides an elixir/erlang agnostic way of providing them other
erlang rules
---
 bazel/elixir/mix_archive_build.bzl | 60 +++++++++++++++++++++++---------------
 1 file changed, 37 insertions(+), 23 deletions(-)

(limited to 'bazel')

diff --git a/bazel/elixir/mix_archive_build.bzl b/bazel/elixir/mix_archive_build.bzl
index 9652e0f1de..adc3b15de6 100644
--- a/bazel/elixir/mix_archive_build.bzl
+++ b/bazel/elixir/mix_archive_build.bzl
@@ -1,7 +1,4 @@
-load(
-    "@rules_erlang//:util.bzl",
-    "path_join",
-)
+load("@bazel_skylib//lib:shell.bzl", "shell")
 load(
     "@rules_erlang//private:util.bzl",
     "additional_file_dest_relative_path",
@@ -20,24 +17,20 @@ def _impl(ctx):
     out = ctx.actions.declare_file(ctx.attr.out.name)
     mix_invocation_dir = ctx.actions.declare_directory("{}_mix".format(ctx.label.name))
 
-    package_dir = path_join(
-        ctx.label.workspace_root,
-        ctx.label.package,
-    )
-
     copy_srcs_commands = []
-    for src in ctx.files.srcs:
-        dest = additional_file_dest_relative_path(ctx.label, src)
-        copy_srcs_commands.extend([
-            'mkdir -p "$(dirname ${{MIX_INVOCATION_DIR}}/{dest})"'.format(
-                dest = dest,
-            ),
-            'cp {flags}"{src}" "${{MIX_INVOCATION_DIR}}/{dest}"'.format(
-                flags = "-r " if src.is_directory else "",
-                src = src.path,
-                dest = dest,
-            ),
-        ])
+    for src in ctx.attr.srcs:
+        for src_file in src[DefaultInfo].files.to_list():
+            dest = additional_file_dest_relative_path(src.label, src_file)
+            copy_srcs_commands.extend([
+                'mkdir -p "$(dirname ${{MIX_INVOCATION_DIR}}/{dest})"'.format(
+                    dest = dest,
+                ),
+                'cp {flags}"{src}" "${{MIX_INVOCATION_DIR}}/{dest}"'.format(
+                    flags = "-r " if src_file.is_directory else "",
+                    src = src_file.path,
+                    dest = dest,
+                ),
+            ])
 
     script = """set -euo pipefail
 
@@ -60,11 +53,23 @@ MIX_INVOCATION_DIR="{mix_invocation_dir}"
 
 {copy_srcs_commands}
 
+ORIGINAL_DIR=$PWD
 cd "${{MIX_INVOCATION_DIR}}"
 export HOME="${{PWD}}"
 export MIX_ENV=prod
 export ERL_COMPILER_OPTIONS=deterministic
-"${{ABS_ELIXIR_HOME}}"/bin/mix archive.build -o "${{ABS_OUT_PATH}}"
+for archive in {archives}; do
+    "${{ABS_ELIXIR_HOME}}"/bin/mix archive.install --force $ORIGINAL_DIR/$archive
+done
+if [[ -n "{ez_deps}" ]]; then
+    mkdir -p _build/${{MIX_ENV}}/lib
+    for ez_dep in {ez_deps}; do
+        unzip -q $ORIGINAL_DIR/$ez_dep -d _build/${{MIX_ENV}}/lib
+    done
+fi
+"${{ABS_ELIXIR_HOME}}"/bin/mix archive.build \\
+    --no-deps-check \\
+    -o "${{ABS_OUT_PATH}}"
 
 # remove symlinks from the _build directory since it
 # is an unused output, and bazel does not allow them
@@ -75,7 +80,8 @@ find . -type l -delete
         elixir_home = elixir_home,
         mix_invocation_dir = mix_invocation_dir.path,
         copy_srcs_commands = "\n".join(copy_srcs_commands),
-        package_dir = package_dir,
+        archives = " ".join([shell.quote(a.path) for a in ctx.files.archives]),
+        ez_deps = " ".join([shell.quote(a.path) for a in ctx.files.ez_deps]),
         out = out.path,
     )
 
@@ -84,6 +90,8 @@ find . -type l -delete
         transitive = [
             erlang_runfiles.files,
             elixir_runfiles.files,
+            depset(ctx.files.archives),
+            depset(ctx.files.ez_deps),
         ],
     )
 
@@ -110,6 +118,12 @@ mix_archive_build = rule(
             mandatory = True,
             allow_files = True,
         ),
+        "archives": attr.label_list(
+            allow_files = [".ez"],
+        ),
+        "ez_deps": attr.label_list(
+            allow_files = [".ez"],
+        ),
         "out": attr.output(),
     },
     toolchains = [
-- 
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