Update vergen to v9 (#34283)

Vergen v9 was split into multiple different crates.
See https://github.com/rustyhorde/vergen/blob/master/MIGRATING_v8_to_v9.md
Since we used the git2 backend, we migrate to vergen-git2.
We only use `VERGEN_GIT_SHA`, so no need to enable any
of the other possible instructions.

Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>

Cargo.lock

@@ -1369,6 +1369,7 @@ dependencies = [
  "ident_case",
  "proc-macro2",
  "quote",
+ "strsim",
  "syn",
 ]
 
@@ -1430,6 +1431,37 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "derive_builder"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "507dfb09ea8b7fa618fcf76e953f4f5e192547945816d5358edffe39f6f94947"
+dependencies = [
+ "derive_builder_macro",
+]
+
+[[package]]
+name = "derive_builder_core"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d5bcf7b024d6835cfb3d473887cd966994907effbe9227e8c8219824d06c4e8"
+dependencies = [
+ "darling",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "derive_builder_macro"
+version = "0.20.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab63b0e2bf4d5928aff72e83a7dace85d7bba5fe12dcc3c5a572d78caffd3f3c"
+dependencies = [
+ "derive_builder_core",
+ "syn",
+]
+
 [[package]]
 name = "derive_more"
 version = "0.99.18"
@@ -6651,7 +6683,7 @@ dependencies = [
  "tracing-perfetto",
  "tracing-subscriber",
  "url",
- "vergen",
+ "vergen-git2",
  "webxr",
  "windows-sys 0.59.0",
  "winit",
@@ -6927,6 +6959,12 @@ dependencies = [
  "quote",
 ]
 
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
 [[package]]
 name = "style"
 version = "0.0.1"
@@ -7803,15 +7841,41 @@ checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
 [[package]]
 name = "vergen"
-version = "8.3.2"
+version = "9.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2990d9ea5967266ea0ccf413a4aa5c42a93dbcfda9cb49a97de6931726b12566"
+checksum = "349ed9e45296a581f455bc18039878f409992999bc1d5da12a6800eb18c8752f"
 dependencies = [
  "anyhow",
- "cfg-if",
+ "derive_builder",
+ "rustversion",
+ "time 0.3.36",
+ "vergen-lib",
+]
+
+[[package]]
+name = "vergen-git2"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e771aff771c0d7c2f42e434e2766d304d917e29b40f0424e8faaaa936bbc3f29"
+dependencies = [
+ "anyhow",
+ "derive_builder",
  "git2",
  "rustversion",
  "time 0.3.36",
+ "vergen",
+ "vergen-lib",
+]
+
+[[package]]
+name = "vergen-lib"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "229eaddb0050920816cf051e619affaf18caa3dd512de8de5839ccbc8e53abb0"
+dependencies = [
+ "anyhow",
+ "derive_builder",
+ "rustversion",
 ]
 
 [[package]]

ports/servoshell/Cargo.toml

@@ -22,7 +22,7 @@ bench = false
 # since build-scripts can't detect the cargo target os at build-time, we
 # must unconditionally add these dependencies. See https://github.com/rust-lang/cargo/issues/4932
 [build-dependencies]
-vergen = { version = "8.3.2", features = ["git", "git2"] }
+vergen-git2 = { version = "1.0.1", features = ["build"] }
 # Android and OpenHarmony
 gl_generator = "0.14"
 # MacOS only

ports/servoshell/build.rs

@@ -8,7 +8,7 @@ use std::io::Write;
 use std::path::Path;
 
 use gl_generator::{Api, Fallbacks, Profile, Registry};
-use vergen::EmitBuilder;
+use vergen_git2::{Emitter, Git2Builder};
 
 // We can make this configurable in the future if different platforms start to have
 // different needs.
@@ -20,6 +20,17 @@ fn generate_egl_bindings(out_dir: &Path) {
     println!("cargo:rustc-link-lib=EGL");
 }
 
+fn emit_git_sha() -> Result<(), String> {
+    let git_options = Git2Builder::default()
+        .sha(true /* short */)
+        .build()
+        .map_err(|e| e.to_string())?;
+    Emitter::default()
+        .add_instructions(&git_options)
+        .and_then(|emitter| emitter.fail_on_error().emit())
+        .map_err(|e| e.to_string())
+}
+
 fn main() -> Result<(), Box<dyn Error>> {
     println!("cargo::rustc-check-cfg=cfg(servo_production)");
     println!("cargo::rustc-check-cfg=cfg(servo_do_not_use_in_production)");
@@ -76,11 +87,7 @@ fn main() -> Result<(), Box<dyn Error>> {
         generate_egl_bindings(out);
     }
 
-    if let Err(error) = EmitBuilder::builder()
+    if let Err(error) = emit_git_sha() {
-        .fail_on_error()
-        .git_sha(true /* short */)
-        .emit()
-    {
         println!(
             "cargo:warning=Could not generate git version information: {:?}",
             error