Bazel: remove non-working fake tree-sitter-extractor workaround

The `.cargo/config.toml` override based workaround wasn't really
working, as while `cargo build|check` was reading that, `cargo metadata`
wasn't, ending up in a completely broken IDE experience.

For the moment, we just use a unified workspace `Cargo.toml` for all
extractors using the shared tree-sitter code, which has the downside of
making bazel pull in dependencies for all of them, and not being able to
do sparse checkouts for them. We should investigate and rivist this in
the future.

Author: Paolo Tranquilli

.gitignore

@@ -68,3 +68,6 @@ node_modules/
 
 # Jetbrains IDE files
 .idea
+
+# cargo build directory
+/target

rust/extractor/Cargo.lock renamed to Cargo.lock

@@ -0,0 +1,14 @@
+# This is the shared workspace file for extractor using shared/tree-sitter/extractor
+[workspace]
+
+resolver = "2"
+members = [
+    "shared/tree-sitter-extractor",
+    "ruby/extractor",
+    "rust/extractor",
+]
+
+[patch.crates-io]
+# patch for build script bug preventing bazel build
+# see https://github.com/rust-lang/rustc_apfloat/pull/17
+rustc_apfloat = { git = "https://github.com/redsun82/rustc_apfloat.git", rev = "096d585100636bc2e9f09d7eefec38c5b334d47b" }

Cargo.toml

@@ -47,35 +47,23 @@ cp.from_cargo(
 )
 use_repo(cp, "py_deps")
 
-# crate_ruby, but shortened due to windows file paths
+# deps for ruby+rust, but shortened due to windows file paths
 r = use_extension(
     "@rules_rust//crate_universe:extension.bzl",
     "crate",
     isolate = True,
 )
 r.from_cargo(
-    name = "rd",
-    cargo_lockfile = "//ruby/extractor:Cargo.lock",
+    name = "r",
+    cargo_lockfile = "//:Cargo.lock",
     manifests = [
+        "//:Cargo.toml",
         "//ruby/extractor:Cargo.toml",
-        "//ruby/extractor/codeql-extractor-fake-crate:Cargo.toml",
-    ],
-)
-use_repo(r, ruby_deps = "rd")
-
-rsp = use_extension(
-    "@rules_rust//crate_universe:extension.bzl",
-    "crate",
-    isolate = True,
-)
-rsp.from_cargo(
-    name = "rs_deps",
-    cargo_lockfile = "//rust/extractor:Cargo.lock",
-    manifests = [
         "//rust/extractor:Cargo.toml",
+        "//shared/tree-sitter-extractor:Cargo.toml",
     ],
 )
-use_repo(rsp, rust_deps = "rs_deps")
+use_repo(r, tree_sitter_extractors_deps = "r")
 
 dotnet = use_extension("@rules_dotnet//dotnet:extensions.bzl", "dotnet")
 dotnet.toolchain(dotnet_version = "8.0.101")

MODULE.bazel

@@ -355,10 +355,5 @@
   "Python model summaries test extension": [
     "python/ql/test/library-tests/dataflow/model-summaries/InlineTaintTest.ext.yml",
     "python/ql/test/library-tests/dataflow/model-summaries/NormalDataflowTest.ext.yml"
-  ],
-  "shared tree-sitter extractor cargo.toml": [
-    "shared/tree-sitter-extractor/Cargo.toml",
-    "ruby/extractor/codeql-extractor-fake-crate/Cargo.toml",
-    "rust/extractor/codeql-extractor-fake-crate/Cargo.toml"
   ]
 }

config/identical-files.json

@@ -1,4 +1,4 @@
-load("@ruby_deps//:defs.bzl", "aliases", "all_crate_deps")
+load("@tree_sitter_extractors_deps//:defs.bzl", "aliases", "all_crate_deps")
 load("//misc/bazel:rust.bzl", "codeql_rust_binary")
 
 codeql_rust_binary(