[{"data":1,"prerenderedAt":40},["ShallowReactive",2],{"doc:en:plugins\u002Frust":3},{"title":4,"lede":5,"html":6,"headings":7},"The Rust kit","A plugin in Rust is a WASM module, compiled by the store from its sources, on the same methods as a plugin in TypeScript. This page says which crates to use, how a source, a code host or a harness is written, and what the compilation refuses.","\u003Ch2 id=\"the-three-crates\">The three crates\u003C\u002Fh2>\n\u003Cp>They are on crates.io in \u003Ccode class=\"key\">0.1.0\u003C\u002Fcode>, under the MIT license: a plugin keeps the choice of its own. Their documentation is on docs.rs, for native and for \u003Ccode class=\"key\">wasm32-wasip1\u003C\u002Fcode>.\u003C\u002Fp>\n\u003Cdiv class=\"table\">\u003Ctable>\n\u003Cthead>\n\u003Ctr>\n\u003Cth>Crate\u003C\u002Fth>\n\u003Cth>What it gives\u003C\u002Fth>\n\u003Cth>When to use it\u003C\u002Fth>\n\u003C\u002Ftr>\n\u003C\u002Fthead>\n\u003Ctbody>\u003Ctr>\n\u003Ctd>\u003Ca href=\"https:\u002F\u002Fdocs.rs\u002Fescouade-plugin-kit\" rel=\"noopener\">\u003Ccode class=\"key\">escouade-plugin-kit\u003C\u002Fcode>\u003C\u002Fa>\u003C\u002Ftd>\n\u003Ctd>The loop (\u003Ccode class=\"key\">serve\u003C\u002Fcode>), the http client, \u003Ccode class=\"key\">sleep\u003C\u002Fcode> and \u003Ccode class=\"key\">timeout\u003C\u002Fcode>, the service of code hosts and sources (\u003Ccode class=\"key\">hosts\u003C\u002Fcode>), the typed errors, the language.\u003C\u002Ftd>\n\u003Ctd>Nearly always.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Ca href=\"https:\u002F\u002Fdocs.rs\u002Fescouade-plugin-protocol\" rel=\"noopener\">\u003Ccode>escouade-plugin-protocol\u003C\u002Fcode>\u003C\u002Fa>\u003C\u002Ftd>\n\u003Ctd>The protocol: its types, \u003Ccode class=\"key\">turn\u003C\u002Fcode> and \u003Ccode class=\"key\">module!\u003C\u002Fcode>, the contract of harnesses (\u003Ccode class=\"key\">engine\u003C\u002Fcode>). The kit reexports it (\u003Ccode>escouade_plugin_kit::protocol\u003C\u002Fcode>).\u003C\u002Ftd>\n\u003Ctd>For a harness, alone.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Ca href=\"https:\u002F\u002Fdocs.rs\u002Fescouade-acp\" rel=\"noopener\">\u003Ccode class=\"key\">escouade-acp\u003C\u002Fcode>\u003C\u002Fa>\u003C\u002Ftd>\n\u003Ctd>The ACP client, a state machine without a process.\u003C\u002Ftd>\n\u003Ctd>For a harness that speaks ACP and that \u003Ca href=\"\u002Fen\u002Fdocs\u002Fplugins\u002Fharnesses\u002F\">the manifest alone\u003C\u002Fa> cannot describe.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003C\u002Ftbody>\u003C\u002Ftable>\u003C\u002Fdiv>\n\u003Cp>A plugin depends on them by version, with its \u003Ccode class=\"key\">Cargo.lock\u003C\u002Fcode>:\u003C\u002Fp>\n\u003Cp>\u003Ccode>sdk\u002Fcreate-escouade-plugin\u002Ftemplates\u002Frust\u002FCargo.toml\u003C\u002Fcode> (excerpt)\u003C\u002Fp>\n\u003Cpre>\u003Ccode class=\"language-toml\">[lib]\nname = "plugin"\ncrate-type = ["cdylib", "rlib"]\n\n[dependencies]\nescouade-plugin-kit = "0.1.0"\nserde_json = "1"\n\n# Only for `cargo test`, on your machine: the module has no tokio.\n[target.'cfg(not(target_family = "wasm"))'.dev-dependencies]\ntokio = { version = "1", features = ["io-util", "rt"] }\n\n# The plugin stands alone: a repository with several plugins does not make it a member of anything.\n[workspace]\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>The same source compiles twice: in process on your machine for \u003Ccode>cargo test\u003C\u002Fcode>, with tokio and reqwest, and for \u003Ccode class=\"key\">wasm32-wasip1\u003C\u002Fcode> as a module, without them.\u003C\u002Fp>\n\u003Ch2 id=\"a-plugin\">A plugin\u003C\u002Fh2>\n\u003Cp>\u003Ccode class=\"key\">Plugin\u003C\u002Fcode> has one method, \u003Ccode class=\"key\">call\u003C\u002Fcode>, which the kit calls for everything that comes, but \u003Ccode class=\"key\">initialize\u003C\u002Fcode> and \u003Ccode class=\"key\">shutdown\u003C\u002Fcode>, which it answers itself:\u003C\u002Fp>\n\u003Cp>\u003Ccode>sdk\u002Fcreate-escouade-plugin\u002Ftemplates\u002Frust\u002Fsrc\u002Flib.rs\u003C\u002Fcode> (excerpt)\u003C\u002Fp>\n\u003Cpre>\u003Ccode class=\"language-rust\">struct Template;\n\nimpl Plugin for Template {\n    \u002F\u002F Every method of Escouade comes here but `initialize` and `shutdown`, which the kit answers. A notification too: what\n    \u002F\u002F it returns goes nowhere. Nothing may block here: an `.await` gives the turn back to Escouade.\n    fn call<'a>(\n        &'a self,\n        cx: &'a Cx,\n        method: &'a str,\n        params: Value,\n    ) -> BoxFuture<'a, Result<Value, Refusal>> {\n        Box::pin(async move {\n            match method {\n                "events\u002Ffact" => {\n                    fact(cx, &params);\n                    Ok(Value::Null)\n                }\n                "permissions\u002Fdecide" => Ok(decide(&params)),\n                other => Err(Refusal::not_found(other)),\n            }\n        })\n    }\n}\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>\u003Ccode class=\"key\">Refusal::not_found\u003C\u002Fcode> answers \u003Ccode class=\"key\">-32601\u003C\u002Fcode> to what the plugin does not serve. What remains is to say what runs, and to make it a module, in one line that produces nothing natively:\u003C\u002Fp>\n\u003Cp>\u003Ccode>sdk\u002Fcreate-escouade-plugin\u002Ftemplates\u002Frust\u002Fsrc\u002Flib.rs\u003C\u002Fcode> (excerpt)\u003C\u002Fp>\n\u003Cpre>\u003Ccode class=\"language-rust\">\u002F\u002F\u002F What the module runs at its first turn: the plugin, kept for the turns to come. Natively, the loop on stdin and stdout.\npub fn run() -> i32 {\n    serve::run("plugin", Template)\n}\n\n\u002F\u002F The one line that makes this crate a module of Escouade. Natively, it is nothing.\nescouade_plugin_kit::protocol::module!(run);\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>\u003Ccode>npm create escouade-plugin@latest my-plugin -- --kind rust\u003C\u002Fcode> writes all that, with its tests: see \u003Ca href=\"\u002Fen\u002Fdocs\u002Fplugins\u002Fquick-start\u002F\">a first plugin\u003C\u002Fa>. Each call of the host has its example in \u003Ca href=\"\u002Fen\u002Fdocs\u002Fplugins\u002Fcalls\u002F\">the calls\u003C\u002Fa>.\u003C\u002Fp>\n\u003Ch2 id=\"the-model-of-turns\">The model of turns\u003C\u002Fh2>\n\u003Cp>One instance per plugin, on one thread, woken by what comes: a line of Escouade, the end of a \u003Ccode class=\"key\">net\u002Ffetch\u003C\u002Fcode>, a piece of a stream, a socket’s message, a program’s output, a timer. Escouade writes all that came on the module’s input, runs \u003Cstrong>one\u003C\u002Fstrong> turn, then serves what the module wrote.\u003C\u002Fp>\n\u003Cp>\u003Cstrong>Nothing waits in a turn.\u003C\u002Fstrong> A request to the host is a line, and its answer comes at a later turn.\u003C\u002Fp>\n\u003Cul>\n\u003Cli>An \u003Ccode class=\"key\">.await\u003C\u002Fcode> gives the hand back. The kit keeps the task and resumes it at the turn its answer comes: several calls go on at once, and a slow call does not hold the others back.\u003C\u002Fli>\n\u003Cli>What blocks the thread blocks the whole plugin: a loop, a long computation, \u003Ccode class=\"key\">std::thread::sleep\u003C\u002Fcode>. There is no thread, and \u003Ccode class=\"key\">std::process\u003C\u002Fcode> fails. \u003Ccode>escouade_plugin_kit::time::sleep\u003C\u002Fcode> replaces the wait.\u003C\u002Fli>\n\u003Cli>There is no environment: the language comes from \u003Ccode class=\"key\">initialize\u003C\u002Fcode>, read by \u003Ccode>escouade_plugin_kit::i18n\u003C\u002Fcode>, and an agent’s folder from \u003Ccode class=\"key\">agent\u002Fattach\u003C\u002Fcode>.\u003C\u002Fli>\n\u003Cli>The network goes through \u003Ccode class=\"key\">http::reqwest\u003C\u002Fcode>, the kit’s facade: the part of reqwest plugins use, over \u003Ccode class=\"key\">net\u002Ffetch\u003C\u002Fcode>. The proxy, the certificates and the delay stay with the host, and what the plugin says of them has no effect.\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>A turn keeps nothing for itself: the state lives in the plugin, between two turns, as in a process. It is not kept from one instance to the next.\u003C\u002Fp>\n\u003Ch3 id=\"the-synchronous-door\">The synchronous door\u003C\u002Fh3>\n\u003Cp>A state machine that must read a file before it answers, like a harness, has one more call: \u003Ccode class=\"key\">escouade.call\u003C\u002Fcode>, an import of the module, served on the plugin’s thread. \u003Ccode class=\"key\">turn::read_file\u003C\u002Fcode> reads through it, and \u003Ccode class=\"key\">turn::host_call\u003C\u002Fcode> sends \u003Ccode class=\"key\">fs\u002F*\u003C\u002Fcode> or \u003Ccode class=\"key\">proc\u002F*\u003C\u002Fcode>. It counts in the turn’s time.\u003C\u002Fp>\n\u003Ch2 id=\"the-limits\">The limits\u003C\u002Fh2>\n\u003Cdiv class=\"table\">\u003Ctable>\n\u003Cthead>\n\u003Ctr>\n\u003Cth>Limit\u003C\u002Fth>\n\u003Cth>Value\u003C\u002Fth>\n\u003C\u002Ftr>\n\u003C\u002Fthead>\n\u003Ctbody>\u003Ctr>\n\u003Ctd>Memory\u003C\u002Ftd>\n\u003Ctd>64 MiB\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>A turn\u003C\u002Ftd>\n\u003Ctd>2 s, 500 ms when it holds a decision\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Ccode class=\"key\">net\u002Ffetch\u003C\u002Fcode>\u003C\u002Ftd>\n\u003Ctd>16 at once\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Ccode class=\"key\">net\u002Fstream\u003C\u002Fcode>\u003C\u002Ftd>\n\u003Ctd>8 at once\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>WebSocket\u003C\u002Ftd>\n\u003Ctd>4 at once\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>Timers\u003C\u002Ftd>\n\u003Ctd>64 at once\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>Programs\u003C\u002Ftd>\n\u003Ctd>4 at once\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003C\u002Ftbody>\u003C\u002Ftable>\u003C\u002Fdiv>\n\u003Cp>The time spent waiting for the network does not count: it is not in a turn. An instance that passes a limit, or panics, is ended and made again, with the same three restarts in five minutes as a process. The journal says why, and what it held is given back by \u003Ccode class=\"key\">agent\u002Fattach\u003C\u002Fcode>.\u003C\u002Fp>\n\u003Ch2 id=\"writing-a-source\">Writing a source\u003C\u002Fh2>\n\u003Cp>A source of the Kanban serves \u003Ccode class=\"key\">tickets\u002F*\u003C\u002Fcode>. The kit does nearly everything: \u003Ccode class=\"key\">Hosts\u003C\u002Fcode> answers the protocol, asks for the account’s token, keeps one client per account and puts the errors in the expected form. A plugin gives its kind (\u003Ccode class=\"key\">SourceKind\u003C\u002Fcode>) and a client (\u003Ccode class=\"key\">TicketSource\u003C\u002Fcode>):\u003C\u002Fp>\n\u003Cp>\u003Ccode>plugins\u002Flinear\u002Fsrc\u002Flib.rs\u003C\u002Fcode> (excerpt)\u003C\u002Fp>\n\u003Cpre>\u003Ccode class=\"language-rust\">impl SourceKind for LinearSource {\n    fn id(&self) -> &str {\n        ID\n    }\n    fn name(&self) -> &str {\n        S\n    }\n    fn client(&self, http: reqwest::Client, account: &Credentials) -> Box<dyn TicketSource> {\n        let base = account.api.clone().filter(|a| !a.trim().is_empty());\n        Box::new(Linear::new(http, account, base.as_deref().unwrap_or(API)))\n    }\n}\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>and plugs them in, in \u003Ccode class=\"key\">run\u003C\u002Fcode>:\u003C\u002Fp>\n\u003Cp>\u003Ccode>plugins\u002Flinear\u002Fsrc\u002Flib.rs\u003C\u002Fcode> (excerpt)\u003C\u002Fp>\n\u003Cpre>\u003Ccode class=\"language-rust\">pub fn run() -> i32 {\n    escouade_plugin_kit::serve::run(\n        "linear",\n        escouade_plugin_kit::hosts::Hosts::new(vec![], vec![Box::new(LinearSource)]),\n    )\n}\n\nescouade_plugin_kit::protocol::module!(run);\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>The manifest declares the account and the source, with \u003Ccode class=\"key\">network\u003C\u002Fcode> and \u003Ccode class=\"key\">account:<name>\u003C\u002Fcode> in \u003Ccode class=\"key\">permissions.secrets\u003C\u002Fcode>:\u003C\u002Fp>\n\u003Cp>\u003Ccode>plugins\u002Flinear\u002Fescouade-plugin.json\u003C\u002Fcode> (excerpt)\u003C\u002Fp>\n\u003Cpre>\u003Ccode class=\"language-json\">    "ticketSources": [{ "id": "linear", "name": "Linear", "account": "linear" }]\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>An http error stays an error: \u003Ccode class=\"key\">HttpError\u003C\u002Fcode> becomes \u003Ccode>-(32000 + status)\u003C\u002Fcode>, \u003Ccode class=\"key\">-32401\u003C\u002Fcode> for a refused token, and \u003Ccode class=\"key\">Refused\u003C\u002Fcode> becomes \u003Ccode class=\"key\">-32010\u003C\u002Fcode>, a lasting refusal. The whole code is in \u003Ca href=\"https:\u002F\u002Fgithub.com\u002Fguillaume-gagnaire\u002Fescouade\u002Ftree\u002Fmain\u002Fplugins\u002Flinear\" rel=\"noopener\">\u003Ccode class=\"key\">plugins\u002Flinear\u003C\u002Fcode>\u003C\u002Fa>, with Jira, Trello and ClickUp beside it.\u003C\u002Fp>\n\u003Ch2 id=\"writing-a-code-host\">Writing a code host\u003C\u002Fh2>\n\u003Cp>A code host serves \u003Ccode class=\"key\">forge\u002F*\u003C\u002Fcode>, the same way: \u003Ccode class=\"key\">ForgeKind\u003C\u002Fcode> and the kit’s \u003Ccode class=\"key\">Forge\u003C\u002Fcode> client, each of whose methods answers \u003Ccode class=\"key\">Unsupported\u003C\u002Fcode> until you write it. The Gitea plugin, which serves every instance of a self-hosted service, fits in a few lines:\u003C\u002Fp>\n\u003Cp>\u003Ccode>plugins\u002Fgitea\u002Fsrc\u002Flib.rs\u003C\u002Fcode> (excerpt)\u003C\u002Fp>\n\u003Cpre>\u003Ccode class=\"language-rust\">impl ForgeKind for GiteaForge {\n    fn id(&self) -> &str {\n        "gitea"\n    }\n    fn name(&self) -> &str {\n        "Gitea \u002F Forgejo"\n    }\n    fn client(&self, http: reqwest::Client, account: &Credentials) -> Box<dyn Forge> {\n        let base = account\n            .api\n            .clone()\n            .filter(|a| !a.trim().is_empty())\n            .unwrap_or_else(|| api_base(&account.url));\n        Box::new(pulls::Gitea::new(http, base, account.token.clone()))\n    }\n}\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>\u003Ccode class=\"key\">account.url\u003C\u002Fcode> is the instance the user typed, hence \u003Ccode class=\"key\">{account}\u003C\u002Fcode> in \u003Ccode class=\"key\">permissions.network\u003C\u002Fcode>. A refused token, a limit reached and the budget of calls are dealt with by \u003Ccode class=\"key\">Hosts\u003C\u002Fcode>. The bench plays \u003Ccode class=\"key\">account\u002Fme\u003C\u002Fcode> and \u003Ccode>forge\u002FpullRequestsOfBranch\u003C\u002Fcode> as soon as \u003Ccode class=\"key\">contributes.forges\u003C\u002Fcode> is declared.\u003C\u002Fp>\n\u003Ch2 id=\"writing-a-harness\">Writing a harness\u003C\u002Fh2>\n\u003Cp>For an agent that speaks ACP, \u003Ca href=\"\u002Fen\u002Fdocs\u002Fplugins\u002Fharnesses\u002F\">the manifest\u003C\u002Fa> is enough, without a line of code. Otherwise, a harness is a state machine that never waits, and depends on the protocol alone: \u003Ccode class=\"key\">turn::run\u003C\u002Fcode> holds the loop, on both targets.\u003C\u002Fp>\n\u003Cp>\u003Ccode>plugins\u002Fcodex\u002Fsrc\u002Flib.rs\u003C\u002Fcode> (excerpt)\u003C\u002Fp>\n\u003Cpre>\u003Ccode class=\"language-rust\">pub fn run() -> i32 {\n    let mut plugin = Plugin::default();\n    turn::run(\n        "codex",\n        json!({ "harnesses": ["codex"] }),\n        move |m, params| plugin.handle(m, params),\n    )\n}\n\nescouade_plugin_protocol::module!(run);\n\u003C\u002Fcode>\u003C\u002Fpre>\n\u003Cp>The contract is in \u003Ccode>escouade_plugin_protocol::engine\u003C\u002Fcode>. The core starts the agent’s program and reads its output; the plugin says how to start it, then turns its lines into items of the conversation. \u003Ccode class=\"key\">std::process::id\u003C\u002Fcode> is replaced by \u003Ccode class=\"key\">turn::instance_id\u003C\u002Fcode>, and \u003Ccode class=\"key\">std::fs\u003C\u002Fcode> by \u003Ccode class=\"key\">turn::read_file\u003C\u002Fcode>, under a root of \u003Ccode class=\"key\">permissions.files\u003C\u002Fcode>. An ACP client plugs in through \u003Ccode class=\"key\">escouade_acp::Agent\u003C\u002Fcode>, whose \u003Ccode class=\"key\">frames\u003C\u002Fcode> reads the agent’s lines.\u003C\u002Fp>\n\u003Ch2 id=\"what-the-compilation-refuses\">What the compilation refuses\u003C\u002Fh2>\n\u003Cp>\u003Ccode>escouade-plugin build\u003C\u002Fcode> compiles as the store does, and \u003Ccode>escouade-plugin validate\u003C\u002Fcode> says the same without running anything. A plugin compiles \u003Cstrong>alone in its folder\u003C\u002Fstrong>, on a copy, with rustc 1.98.0 and \u003Ccode class=\"key\">wasm32-wasip1\u003C\u002Fcode>, which the command downloads itself, an imposed profile and \u003Ccode class=\"key\">--locked\u003C\u002Fcode>: for the same sources and the same \u003Ccode class=\"key\">Cargo.lock\u003C\u002Fcode>, the module is the same to the byte under Windows and under Linux.\u003C\u002Fp>\n\u003Cdiv class=\"table\">\u003Ctable>\n\u003Cthead>\n\u003Ctr>\n\u003Cth>Refused\u003C\u002Fth>\n\u003Cth>Why\u003C\u002Fth>\n\u003Cth>What to do\u003C\u002Fth>\n\u003C\u002Ftr>\n\u003C\u002Fthead>\n\u003Ctbody>\u003Ctr>\n\u003Ctd>No \u003Ccode class=\"key\">Cargo.lock\u003C\u002Fcode>\u003C\u002Ftd>\n\u003Ctd>The store compiles what it says, and nothing else.\u003C\u002Ftd>\n\u003Ctd>Commit it.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>A \u003Ccode class=\"key\">build.rs\u003C\u002Fcode> in the plugin\u003C\u002Ftd>\n\u003Ctd>It would run natively on the store.\u003C\u002Ftd>\n\u003Ctd>Generate the code beforehand and commit it.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>A procedural macro of your own\u003C\u002Ftd>\n\u003Ctd>The same reason.\u003C\u002Ftd>\n\u003Ctd>A \u003Ccode class=\"key\">macro_rules!\u003C\u002Fcode> macro, or a crate of the list.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>A crate off the closed list that runs at compile time\u003C\u002Ftd>\n\u003Ctd>A script, a macro or what they depend on. What only runs in WASM need not be there.\u003C\u002Ftd>\n\u003Ctd>Remove it, or stay on the versions of the list.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>A \u003Ccode class=\"key\">git\u003C\u002Fcode> dependency, or one from another registry\u003C\u002Ftd>\n\u003Ctd>The lock must come from crates.io alone.\u003C\u002Ftd>\n\u003Ctd>Publish it on crates.io.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>A \u003Ccode class=\"key\">path\u003C\u002Fcode> that leaves the folder\u003C\u002Ftd>\n\u003Ctd>The store reads the plugin’s folder alone.\u003C\u002Ftd>\n\u003Ctd>Keep your subcrates in the folder.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Ccode class=\"key\">[patch]\u003C\u002Fcode>, \u003Ccode class=\"key\">[replace]\u003C\u002Fcode>\u003C\u002Ftd>\n\u003Ctd>The module would no longer be what the lock says.\u003C\u002Ftd>\n\u003Ctd>Remove them.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Ccode class=\"key\">.cargo\u002Fconfig.toml\u003C\u002Fcode>, \u003Ccode class=\"key\">rust-toolchain\u003C\u002Fcode>, \u003Ccode class=\"key\">[profile.*.package]\u003C\u002Fcode>, \u003Ccode class=\"key\">build-override\u003C\u002Fcode>\u003C\u002Ftd>\n\u003Ctd>The toolchain and the profile are imposed.\u003C\u002Ftd>\n\u003Ctd>Remove them. A plain \u003Ccode class=\"key\">[profile]\u003C\u002Fcode> is allowed, and ignored.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>Anything but a \u003Ccode class=\"key\">cdylib\u003C\u002Fcode> (an \u003Ccode class=\"key\">rlib\u003C\u002Fcode> beside it is allowed); a \u003Ccode class=\"key\">[[bin]]\u003C\u002Fcode>, \u003Ccode class=\"key\">src\u002Fmain.rs\u003C\u002Fcode>, \u003Ccode class=\"key\">src\u002Fbin\u003C\u002Fcode>\u003C\u002Ftd>\n\u003Ctd>A plugin is a module, without \u003Ccode class=\"key\">main\u003C\u002Fcode>.\u003C\u002Ftd>\n\u003Ctd>\u003Ccode>crate-type = ["cdylib"]\u003C\u002Fcode>.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>\u003Ccode class=\"key\">module!\u003C\u002Fcode> missing\u003C\u002Ftd>\n\u003Ctd>The module has no \u003Ccode class=\"key\">escouade-turn\u003C\u002Fcode> export.\u003C\u002Ftd>\n\u003Ctd>The \u003Ccode class=\"key\">module!\u003C\u002Fcode> line.\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003C\u002Ftbody>\u003C\u002Ftable>\u003C\u002Fdiv>\n\u003Cdiv class=\"callout warning\">\u003Cp class=\"callout-title\">Warning\u003C\u002Fp>\u003Cp>The closed list names versions: \u003Ccode class=\"key\">serde\u003C\u002Fcode> 1.0.229, \u003Ccode class=\"key\">syn\u003C\u002Fcode> 3.0.9… A \u003Ccode>cargo update\u003C\u002Fcode> that raises one of these crates can get the plugin refused (“… is not on the reviewed list”). Run \u003Ccode>escouade-plugin validate\u003C\u002Fcode> and \u003Ccode class=\"key\">build\u003C\u002Fcode> after each update of the lock. The template writes a \u003Ccode class=\"key\">Cargo.lock\u003C\u002Fcode> that passes.\u003C\u002Fp>\n\u003C\u002Fdiv>\n\u003Ch2 id=\"next\">Next\u003C\u002Fh2>\n\u003Cul>\n\u003Cli>\u003Ca href=\"\u002Fen\u002Fdocs\u002Fplugins\u002Ftesting\u002F\">Testing a plugin\u003C\u002Fa>: \u003Ccode>cargo test\u003C\u002Fcode>, the bench and the fake Escouade.\u003C\u002Fli>\n\u003Cli>\u003Ca href=\"\u002Fen\u002Fdocs\u002Fplugins\u002Fpublishing\u002F\">Publishing on the store\u003C\u002Fa>: the tag, the checks, the review.\u003C\u002Fli>\n\u003C\u002Ful>\n",[8,12,15,18,22,25,28,31,34,37],{"id":9,"text":10,"depth":11},"the-three-crates","The three crates",2,{"id":13,"text":14,"depth":11},"a-plugin","A plugin",{"id":16,"text":17,"depth":11},"the-model-of-turns","The model of turns",{"id":19,"text":20,"depth":21},"the-synchronous-door","The synchronous door",3,{"id":23,"text":24,"depth":11},"the-limits","The limits",{"id":26,"text":27,"depth":11},"writing-a-source","Writing a source",{"id":29,"text":30,"depth":11},"writing-a-code-host","Writing a code host",{"id":32,"text":33,"depth":11},"writing-a-harness","Writing a harness",{"id":35,"text":36,"depth":11},"what-the-compilation-refuses","What the compilation refuses",{"id":38,"text":39,"depth":11},"next","Next",1793889382364]