Remove native deps: openssl-sys, git2-sys, libssh2-sys (paritytech#14302)

* Remove native deps: openssl-sys, git2-sys, libssh2-sys

Enables substrate master compiles first time on more machines.
(E.g. not needing
OPENSSL_DEV_LIB to be correctly configured.)

* cargo fmt

* Remove newline

* Update utils/frame/generate-bags/src/lib.rs

Co-authored-by: Bastian Köcher <[email protected]>

* remove trailing new line

---------

Co-authored-by: Bastian Köcher <[email protected]>

Author: gilescope

Cargo.lock

@@ -14,7 +14,6 @@ targets = ["x86_64-unknown-linux-gnu"]
 clap = { version = "4.2.5", features = ["derive"] }
 flate2 = "1.0"
 fs_extra = "1.3"
-git2 = "0.16"
 glob = "0.3"
 tar = "0.4"
 tempfile = "3"

scripts/ci/node-template-release/Cargo.toml

@@ -8,7 +8,6 @@ use std::{
 use clap::Parser;
 use flate2::{write::GzEncoder, Compression};
 use fs_extra::dir::{self, CopyOptions};
-use git2;
 use glob;
 use itertools::Itertools;
 use tar;
@@ -79,17 +78,20 @@ fn write_cargo_toml(path: &Path, cargo_toml: CargoToml) {
 
 /// Gets the latest commit id of the repository given by `path`.
 fn get_git_commit_id(path: &Path) -> String {
-	let repo = git2::Repository::discover(path)
-		.expect(&format!("Node template ({}) should be in a git repository.", path.display()));
-
-	let commit_id = repo
-		.head()
-		.expect("Repository should have a head")
-		.peel_to_commit()
-		.expect("Head references a commit")
-		.id();
+	let mut dir = path;
+	while !dir.join(".git").exists() {
+		dir = dir
+			.parent()
+			.expect(&format!("Node template ({}) should be in a git repository.", path.display()));
+	}
 
-	format!("{}", commit_id)
+	let git = dir.join(".git");
+	let head = git.join("HEAD");
+	let head_contents = fs::read_to_string(head).expect("Repository should have a HEAD");
+	let branch = head_contents.strip_prefix("ref: ").expect(".git/HEAD to start 'ref: '").trim();
+	let mut commit = fs::read_to_string(git.join(branch)).expect("Head references a commit");
+	commit.truncate(commit.trim_end().len());
+	commit
 }
 
 /// Rewrites git dependencies:

scripts/ci/node-template-release/src/main.rs

@@ -17,5 +17,4 @@ pallet-staking = { version = "4.0.0-dev", path = "../../../frame/staking" }
 
 # third party
 chrono = { version = "0.4.19" }
-git2 = { version = "0.16.0", default-features = false }
 num-format = "0.4.3"

utils/frame/generate-bags/Cargo.toml

@@ -89,8 +89,11 @@ fn existential_weight<T: pallet_staking::Config>(
 /// Just searches the git working directory root for files matching certain patterns; it's
 /// pretty naive.
 fn path_to_header_file() -> Option<PathBuf> {
-	let repo = git2::Repository::open_from_env().ok()?;
-	let workdir = repo.workdir()?;
+	let mut workdir: &Path = &std::env::current_dir().ok()?;
+	while !workdir.join(".git").exists() {
+		workdir = workdir.parent()?;
+	}
+
 	for file_name in &["HEADER-APACHE2", "HEADER-GPL3", "HEADER", "file_header.txt"] {
 		let path = workdir.join(file_name);
 		if path.exists() {