fix: run cargo clippy, fmt only if available

1 files changed, 7 insertions, 2 deletions

diff --git a/check b/check
index 0dc71cc..65514cc 100755
--- a/check
+++ b/check
@@ -16,9 +16,14 @@ then
     esac
 fi
 
+got_cargo_cmd()
+{
+    cargo --list | grep " $1 " > /dev/null
+}
+
 cargo build --all-targets $quiet
-cargo clippy $quiet
-cargo fmt -- --check
+got_cargo_cmd clippy && cargo clippy $quiet
+got_cargo_cmd fmt && cargo fmt -- --check
 $hideok cargo test $quiet
 
 sp-docgen obnam.md -o obnam.html