rpg 0.11.0: Rust psql CLI

A Postgres terminal is the command-line front end for talking to a database, and Nik Samokhvalov’s rpg 0.11.0 is trying to replace the standard `psql` client without breaking old workflows. (github.com) Samokhvalov published the 0.11.0 release on April 14, 2026, in a repository that describes rpg as a Rust-written, `psql`-compatible terminal with built-in diagnostics and a single-binary, cross-platform install. (github.com) The release’s core claim is compatibility: rpg says 222 of 232 PostgreSQL regression tests now pass against a PostgreSQL 18 server, with 0 failures and 10 skips. The skipped cases are listed as continuous-integration limits, extension requirements, or two known gaps in output formatting and backslash parsing. (github.com) Version 0.11.0 added three newly passing test groups — `copydml`, `transactions`, and `plpgsql` — and implemented several `\d` describe commands, including `\dP`, `\dA`, `\dAc`, `\dO`, `\dF`, `\dFd`, `\dFp`, and `\dFt`. (github.com) That matters because `psql` is the default terminal client shipped with PostgreSQL, and teams use it for ad hoc queries, schema inspection, scripts, and production debugging. PostgreSQL’s own site calls the database system a project with more than 35 years of active development, which helps explain why matching its command-line behavior is slow, detailed work. (postgresql.org, github.com) rpg is testing itself against PostgreSQL’s own regression suite rather than only a hand-written compatibility checklist. An April 3, 2026 issue in the project said the goal was byte-for-byte output compatibility with upstream `psql`, using PostgreSQL’s source-tree tests as the reference point. (github.com) The WebAssembly addition pushes the terminal into a browser tab. The project’s `WASM.md` says the experimental build compiles to `wasm32-unknown-unknown`, connects to Postgres through a WebSocket proxy, and works with PostgreSQL 14 through 18 servers. (github.com) That browser build does not expose every feature. The project says commands that depend on a local file system, shell, editor, or the `ratatui` text user interface are unavailable in WebAssembly, including `\i`, `\!`, `\e`, `/ash`, and `/rpg`. (github.com) The project also pitches richer database diagnostics than stock `psql`. Its repository says rpg includes built-in database administrator tools and project-specific slash commands alongside the traditional backslash commands that PostgreSQL users already know. (github.com, github.com) The open question is whether developers will trust a substitute client on habit-heavy database work. Samokhvalov’s answer in 0.11.0 is to keep narrowing the gap with upstream `psql`, one regression test at a time. (github.com, github.com)