diff --git a/justfile b/justfile
index 967414e..2478b02 100644
--- a/justfile
+++ b/justfile
@@ -1,45 +1,64 @@
-export MAKEFLAGS := "-j8"
+set dotenv-load := true
+rustc-version := "nightly"
+
+#export RUSTFLAGS := "-C link-arg=-fuse-ld=lld -Ztime-passes"
 export RUSTFLAGS := "-C link-arg=-fuse-ld=lld -C target-cpu=native"
-#export RUSTFLAGS := "-C linker-plugin-lto -C linker=/home/jstrong/src/clang-12/bin/clang-12 -C link-arg=-fuse-ld=lld -C target-cpu=native"
 
-cargo +args='':
-    cargo {{args}}
+cargo cmd +args='':
+    cd {{invocation_directory()}} && cargo +{{rustc-version}} {{cmd}} {{args}}
+
+# cargo check {{args}}
+check +args='': && (cargo "check" args)
+
+# cargo test {{args}}
+test +args='': && (cargo "test" args)
 
-check +args='':
-    @just cargo check {{args}}
+# cargo bench {{args}}
+bench +args='': && (cargo "bench" args)
 
-debug-build binary_name='binary-serialization' +args='':
-    @just cargo build --bin {{binary_name}} {{args}}
+# cargo update {{args}}
+update +args='': && (cargo "update" args)
 
-release-build binary_name='polar' +args='':
-    @just cargo build --bin {{binary_name}} --release {{args}}
+# cargo run {{args}}
+run +args='': && (cargo "run" args)
 
-example name +args='':
-    @just cargo build --example {{name}} {{args}}
+# cargo doc --open {{args}}
+doc +args='': && (cargo "doc" "--open" args)
 
-test +args='':
-    @just cargo test {{args}}
+# just rebuild docs, don't open browser page again
+redoc +args='': && (cargo "doc" args)
 
-doc +args='':
-    @just cargo doc --open {{args}}
+# like doc, but include private items
+doc-priv +args='': && (cargo "doc" "--open" "--document-private-items" args)
 
-doc-priv +args='':
-    @just cargo doc --open --document-private-items {{args}}
+# cargo build --bin {{binary-name}} {{args}}
+debug-build binary-name +args='': && (cargo "build" "--bin" binary-name args)
 
+# cargo build --bin {{binary-name}} --release {{args}}
+release-build binary-name +args='': && (cargo "build" "--bin" binary-name "--release" args)
+
+# cargo build --example {{example-name}} {{args}}
+example example-name +args='': && (cargo "build" "--example" example-name args)
+
+# display env variables that will be used for building
 show-build-env:
-    @ env | rg RUST
-    @ env | rg '^MAKEFLAGS' | sort
+    @ echo "invocation_dir() = {{invocation_directory()}}"
+    @ echo "rustc-version = {{rustc-version}}"
+    @ env | rg '(RUST|SCC)' -i --color never
+
+pre-release: && (cargo "check") (cargo "test") (cargo "clippy") (cargo "fmt")
 
-bench +args='':
-    @just cargo bench {{args}}
+cache-stats:
+    sccache -s
 
-update +args='':
-    @just cargo update {{args}}
+set-git-email email +dirs:
+    echo "setting git email to {{email}} for {{dirs}}"
+    for DIR in {{dirs}}; do \
+        [ -d $DIR/.git ] && git -C $DIR config user.email "{{email}}" || echo "no $DIR/.git folder, skipping..."; \
+    done
 
-rebuild:
-    just cargo clean
-    just update
-    just test
+show-git-email dir:
+    @[ -d {{dir}}/.git ] && echo "{{dir}},$(git -C {{dir}} config user.email)" || exit 0
 
-flush-disk-cache:
-    sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches'
+show-git-emails:
+    fd -t d . --max-depth 1 -x just show-git-email {} | xsv sort -s 2,1 | xsv table