fix(installer): respect $CARGO_HOME and $CARGO_INSTALL_ROOT (#2078)

* fix(installer): respect CARGO_HOME and CARGO_INSTALL_ROOT

* we win those

Author: jonaro00

install.ps1

@@ -158,12 +158,16 @@ Please open an issue if you encounter any problems!
         if (!$?) { return Exit-Failure "temp-folder" }
         tar.exe -xzf "$TempDir\cargo-shuttle.tar.gz" -C "$TempDir\cargo-shuttle"
         if (!$?) { return Exit-Failure "tar-extract-binary" }
-        $CargoHome = if ($null -ne $Env:CARGO_HOME) { $Env:CARGO_HOME } else { "$HOME\.cargo" }
-        Write-Host "Installing to $CargoHome\bin\cargo-shuttle.exe"
-        Move-Item -Force "$TempDir\cargo-shuttle\cargo-shuttle-x86_64-pc-windows-msvc-$LatestRelease\cargo-shuttle.exe" "$CargoHome\bin\cargo-shuttle.exe"
+        $CargoDir = if ($null -ne $Env:CARGO_HOME) { $Env:CARGO_HOME } else { "$HOME\.cargo" }
+        $CargoInstallDir = if ($null -ne $Env:CARGO_INSTALL_ROOT) { $Env:CARGO_INSTALL_ROOT } else { "$CargoDir" }
+        $CargoInstallBinDir = "$CargoInstallDir\bin"
+        New-Item -ItemType Directory -Force "$CargoInstallBinDir" | Out-Null
+        if (!$?) { return Exit-Failure "binary-folder" }
+        Write-Host "Installing to $CargoInstallBinDir\cargo-shuttle.exe"
+        Move-Item -Force "$TempDir\cargo-shuttle\cargo-shuttle-x86_64-pc-windows-msvc-$LatestRelease\cargo-shuttle.exe" "$CargoInstallBinDir\cargo-shuttle.exe"
         if (!$?) { return Exit-Failure "move-binary" }
-        Write-Host "Installing to $CargoHome\bin\shuttle.exe"
-        Move-Item -Force "$TempDir\cargo-shuttle\cargo-shuttle-x86_64-pc-windows-msvc-$LatestRelease\shuttle.exe" "$CargoHome\bin\shuttle.exe"
+        Write-Host "Installing to $CargoInstallBinDir\shuttle.exe"
+        Move-Item -Force "$TempDir\cargo-shuttle\cargo-shuttle-x86_64-pc-windows-msvc-$LatestRelease\shuttle.exe" "$CargoInstallBinDir\shuttle.exe"
         if (!$?) { return Exit-Failure "move-binary" }
         Remove-Item -Recurse -Force -ErrorAction SilentlyContinue "$TempDir\cargo-shuttle.tar.gz", "$TempDir\cargo-shuttle"
         return Exit-Success

install.sh

@@ -69,6 +69,9 @@ echo "==================================================="
 echo
 
 INSTALLED_RUST=""
+CARGO_DIR="${CARGO_HOME:-$HOME/.cargo}"
+CARGO_INSTALL_DIR="${CARGO_INSTALL_ROOT:-$CARGO_DIR}"
+CARGO_INSTALL_BIN_DIR="$CARGO_INSTALL_DIR/bin"
 
 _send_telemetry() {
   if [[ "$TELEMETRY" = "1" ]]; then
@@ -106,7 +109,7 @@ _exit_success() {
   if [[ "$INSTALLED_RUST" = "yes" ]]; then
     echo
     [[ "$SUPPORTS_COLOR" = "1" ]] && echo -en "\e[33m" # yellow
-    echo "Remember to 'source \"$HOME/.cargo/env\"' or restart your shell to run cargo and shuttle commands!"
+    echo "Remember to 'source \"$CARGO_DIR/env\"' or restart your shell to run cargo and shuttle commands!"
     [[ "$SUPPORTS_COLOR" = "1" ]] && echo -en "\e[0m"
   fi
   exit 0
@@ -269,13 +272,14 @@ _install_binary() {
     _exit_failure "tar-not-found"
   fi
   tar -xzf "cargo-shuttle-$LATEST_VERSION-$target.tar.gz" || _exit_failure "tar-extract-binary"
-  echo "Installing to $HOME/.cargo/bin/cargo-shuttle"
-  mv "cargo-shuttle-$target-$LATEST_VERSION/cargo-shuttle" "$HOME/.cargo/bin/" || _exit_failure "move-binary"
-  echo "Installing to $HOME/.cargo/bin/shuttle"
-  mv "cargo-shuttle-$target-$LATEST_VERSION/shuttle" "$HOME/.cargo/bin/" || _exit_failure "move-binary"
+  mkdir -p "$CARGO_INSTALL_BIN_DIR"
+  echo "Installing to $CARGO_INSTALL_BIN_DIR/cargo-shuttle"
+  mv "cargo-shuttle-$target-$LATEST_VERSION/cargo-shuttle" "$CARGO_INSTALL_BIN_DIR/" || _exit_failure "move-binary"
+  echo "Installing to $CARGO_INSTALL_BIN_DIR/shuttle"
+  mv "cargo-shuttle-$target-$LATEST_VERSION/shuttle" "$CARGO_INSTALL_BIN_DIR/" || _exit_failure "move-binary"
   popd >/dev/null || _exit_failure "popd"
-  if [[ ":$PATH:" != *":$HOME/.cargo/bin:"* ]]; then
-    echo "Add $HOME/.cargo/bin to PATH to access the 'shuttle' command"
+  if [[ ":$PATH:" != *":$CARGO_INSTALL_BIN_DIR:"* ]]; then
+    echo "Add $CARGO_INSTALL_BIN_DIR to PATH to access the 'shuttle' command"
   fi
 }
 
@@ -286,7 +290,9 @@ _install_rust_and_cargo() {
     case $yn in
     [Yy]*|"")
       curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y || _exit_failure "install-rust"
-      source "$HOME/.cargo/env" # (this only affects this script's env, user has to source or restart shell to apply to their shell)
+      # this only affects this script's env,
+      # user has to source or restart shell to apply to their shell
+      source "$CARGO_DIR/env"
       break
       ;;
     [Nn]*)