Compatibility report

This report is generated by running the same fixtures under the pinned Babashka release and the current Gobb binary. Each fixture runs in an isolated working directory. The harness compares standard output, standard error, exit status, and filesystem effects.

Current result

• 28 exact matches
• 2 documented differences
• 0 unexpected differences
• 0 unexpected matches

Status	Area	Fixture	Description
✓ Match	cli	:cli/expression	Evaluate an expression
✓ Match	cli	:cli/arguments	Bind expression command-line arguments
✓ Match	execution-state	:cli/expression-file	Bind BB's expression source marker
✓ Match	reader	:reader/collections	Read and print nested collection literals
✓ Match	reader	:reader/bb-feature	Select the :bb reader-conditional branch
○ Known difference	reader	:reader/gobb-feature	Select Gobb's additional reader-conditional branch
✓ Match	reader	:reader/data-readers	Load a tagged-literal reader from data_readers.clj
✓ Match	printing	:printing/basic	Preserve print and prn output
✓ Match	namespace	:namespace/switch	Create and switch the current namespace
✓ Match	dynamic-vars	:vars/dynamic	Bind dynamic command-line state
✓ Match	script-loading	:loading/script	Load a script with arguments
✓ Match	execution-state	:loading/script-state	Bind absolute file, arguments, and working directory
✓ Match	script-loading	:loading/require	Require source from an explicit classpath
✓ Match	script-loading	:loading/repeated-require	Repeated require preserves the loaded namespace
✓ Match	script-loading	:loading/resource	Resolve and read a resource from the runtime classpath
✓ Match	script-loading	:loading/preloads	Evaluate BABASHKA_PRELOADS before the expression
✓ Match	script-loading	:loading/init	Evaluate --init before the expression
✓ Match	invocation	:invocation/main	Invoke a namespace -main with command-line arguments
✓ Match	invocation	:invocation/main-var	Invoke a qualified var through -m
✓ Match	invocation	:invocation/exec	Invoke a qualified var through -x with parsed options
✓ Match	runtime	:runtime/working-directory	Normalize each isolated working directory
✓ Match	execution-state	:runtime/environment	Expose the inherited process environment
✓ Match	runtime	:runtime/timestamp	Normalize a declared millisecond timestamp
✓ Match	errors	:errors/exception-data	Preserve structured exception data
✓ Match	errors	:io/stderr	Bind err as the standard error writer
✓ Match	execution-state	:io/stdin	Bind in as the standard input reader
✓ Match	exit	:exit/nonzero	Preserve an explicit nonzero exit status
○ Known difference	filesystem	:filesystem/write	Write a deterministic filesystem effect
✓ Match	compiled-programs	:compiled/main	Compile and execute a namespace containing -main
✓ Match	compiled-programs	:compiled/host-state	Keep runtime and compiled namespace and binding state aligned

Differences

:reader/gobb-feature

Known difference. The :gobb feature is intentionally active only under Gobb

:filesystem/write

Known difference. Glojure's core spit host adapter is not linked into Gobb yet

Reproduce

make compat

Full per-fixture commands and raw and normalized results are retained in .cache/compat/fixtures/. The machine-readable aggregate is .cache/compat/report.edn.

The harness normalizes only the declared sources of nondeterminism:

• working-directory: Replace each isolated fixture directory with
• platform-separators: Use forward slashes in captured paths on every platform
• timestamp: Replace explicitly declared millisecond timestamps
• process-id: Replace explicitly declared process identifiers
• port: Replace explicitly declared ephemeral port numbers