Use improved libprism source to build Prism without dependency on Ruby

The main blocker for upstreaming Prism parser to Sorbet is that we currently
rely on Ruby to build Prism, as its required by Prism's `rake template` task.

But by package the files generated by `rake template` in Prim's release,
we will be able to remove the dependency on Ruby while significantly simplify
the build configurations for Prism.

.github/workflows/ci.yml

@@ -5,9 +5,6 @@ on:
     branches: [prism]
   pull_request:
     branches: [prism]
-env:
-  RUBY_ROOT: '/opt/hostedtoolcache/Ruby/3.3.0/x64'
-
 jobs:
   tests:
     runs-on: ubuntu-latest

WORKSPACE

@@ -2,10 +2,8 @@ workspace(name = "com_stripe_ruby_typer")
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 load("//third_party:externals.bzl", "register_sorbet_dependencies")
-load("//third_party:ruby_root.bzl", "ruby_root")
 
 register_sorbet_dependencies()
-ruby_root(name = "ruby_root")
 
 load("@rules_foreign_cc//foreign_cc:repositories.bzl", "rules_foreign_cc_dependencies")
 

third_party/externals.bzl

@@ -12,9 +12,8 @@ def register_sorbet_dependencies():
 
     http_archive(
         name = "prism",
-        url = "https://github.com/ruby/prism/archive/v1.2.0.zip",
-        sha256 = "f398cdb0ed9e5f9b8f7127a8c180ed6a8a611ad4612dcdae8a91ebfc5ee0ed7c",
-        strip_prefix = "prism-1.2.0",
+        url = "https://github.com/Shopify/sorbet/releases/download/test-release-artifacts/prism-release-artifacts-new.tar.gz",
+        sha256 = "58d93c7fd7dc5fa5a3adc4df4ea714a8982e720c10abce5f5e1d561860a3ba7f",
         build_file = "@com_stripe_ruby_typer//third_party:prism.BUILD",
     )
 

third_party/prism.BUILD

@@ -1,58 +1,7 @@
-load("@ruby_root//:ruby_root.bzl", "RUBY_ROOT") # Get the RUBY_ROOT environment variable
-
-GENERATED_SRCS = [
-  "src/diagnostic.c",
-  "src/node.c",
-  "src/prettyprint.c",
-  "src/serialize.c",
-  "src/token_type.c",
-]
-
-GENERATED_HDRS = [
-  "include/prism/ast.h",
-  "include/prism/diagnostic.h",
-]
-
-genrule(
-  name = "generate_templates",
-  srcs = [
-    "templates/template.rb",
-    "prism.gemspec",
-    "Gemfile",
-    "Gemfile.lock",
-    "config.yml", # Contains the data to populate the ERB templates.
-  ] + \
-  ["templates/{c_file}.erb".format(c_file = c_file) for c_file in GENERATED_SRCS] + \
-  ["templates/{h_file}.erb".format(h_file = h_file) for h_file in GENERATED_HDRS],
-  outs = GENERATED_HDRS + GENERATED_SRCS,
-  cmd = """
-    # set -o xtrace # Uncomment this to debug the execution of this script.
-    # echo "PWD: $$PWD"
-    # echo "RULEDIR: $(RULEDIR)"
-
-    export PATH="{ruby_root}/bin:$$PATH"
-
-    gemfile="$(location Gemfile)"
-    script="$(location templates/template.rb)"
-
-    bundle install --gemfile="$$gemfile"
-
-    {template_render_commands}
-
-  """.format(
-    ruby_root = RUBY_ROOT,
-    template_render_commands = "\n    ".join([
-      """
-        bundle exec --gemfile="$$gemfile" ruby "$$script" {f} "$(location {f})"
-      """.format(f=f) for f in (GENERATED_SRCS + GENERATED_HDRS)
-    ])
-  ),
-)
-
 cc_library(
   name = "prism",
-  srcs = glob(["src/**/*.c"], exclude=GENERATED_SRCS) + [":generate_templates"],
-  hdrs = glob(["include/**/*.h"], exclude=GENERATED_HDRS) + [":generate_templates"],
+  srcs = glob(["src/**/*.c"]),
+  hdrs = glob(["include/**/*.h"]),
   visibility = ["//visibility:public"],
   includes = ["include"],
   copts = ["-Wno-implicit-fallthrough"],

tools/scripts/verify_prism_regression_tests.sh

@@ -2,7 +2,7 @@
 set -euo pipefail
 
 echo "Building Sorbet..."
-./bazel build //main:sorbet --config=dbg --define RUBY_PATH=$RUBY_ROOT
+./bazel build //main:sorbet --config=dbg
 
 echo "Verifying parse trees..."