feat: Support install directly from git repo (#1162)

Fixed #3

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

e2e-tests/git.sh

@@ -0,0 +1,61 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+test_cargo_binstall_install() {
+  # Test that the installed binaries can be run
+  cargo binstall --help >/dev/null
+
+  cargo_binstall_version="$(cargo binstall -V)"
+  echo "$cargo_binstall_version"
+
+  [ "$cargo_binstall_version" = "cargo-binstall 0.12.0" ]
+}
+
+unset CARGO_INSTALL_ROOT
+
+CARGO_HOME="$(mktemp -d 2>/dev/null || mktemp -d -t 'cargo-home')"
+export CARGO_HOME
+export PATH="$CARGO_HOME/bin:$PATH"
+
+GIT="$(mktemp -d 2>/dev/null || mktemp -d -t 'git')"
+if [ "$OSTYPE" = "cygwin" ] || [ "$OSTYPE" = "msys" ]; then
+    # Convert it to windows path so `--git "file://$GIT"` would work
+    # on windows.
+    GIT="$(cygpath -w "$GIT")"
+fi
+
+git init "$GIT"
+cp manifests/github-test-Cargo.toml "$GIT/Cargo.toml"
+(
+  cd "$GIT"
+  git config user.email 'test@example.com'
+  git config user.name 'test'
+  git add Cargo.toml
+  git commit -m "Add Cargo.toml"
+)
+
+# Install binaries using `--git`
+"./$1" binstall --force --git "file://$GIT" --no-confirm cargo-binstall
+
+test_cargo_binstall_install
+
+cp -r manifests/workspace/* "$GIT"
+(
+  cd "$GIT"
+  git add .
+  git commit -m 'Update to workspace'
+)
+
+# Install binaries using `--git`
+"./$1" binstall --force --git "file://$GIT" --no-confirm cargo-binstall
+
+test_cargo_binstall_install
+
+# Install binaries using `--git`
+"./$1" binstall --force --git "file://$GIT" --no-confirm cargo-watch
+
+cargo_watch_version="$(cargo watch -V)"
+echo "$cargo_watch_version"
+
+[ "$cargo_watch_version" = "cargo-watch 8.4.0" ]