fix(typst): Skip typst when self-update is disabled (#1397)

Author: GideonBear

Cargo.lock

@@ -54,6 +54,7 @@ rust-i18n = "3.0.1"
 sys-locale = "0.3.1"
 jetbrains-toolbox-updater = "5.0.0"
 indexmap = { version = "2.9.0", features = ["serde"] }
+serde_json = "1.0.145"
 
 [package.metadata.generate-rpm]
 assets = [{ source = "target/release/topgrade", dest = "/usr/bin/topgrade" }]

Cargo.toml

@@ -5,6 +5,7 @@ use jetbrains_toolbox_updater::{find_jetbrains_toolbox, update_jetbrains_toolbox
 use regex::bytes::Regex;
 use rust_i18n::t;
 use semver::Version;
+use serde::Deserialize;
 use std::ffi::OsString;
 use std::iter::once;
 use std::path::PathBuf;
@@ -1779,9 +1780,40 @@ pub fn run_yazi(ctx: &ExecutionContext) -> Result<()> {
     ctx.execute(ya).args(["pkg", "upgrade"]).status_checked()
 }
 
+#[derive(Deserialize)]
+struct TypstInfo {
+    build: TypstBuild,
+}
+
+#[derive(Deserialize)]
+struct TypstBuild {
+    settings: TypstSettings,
+}
+
+#[derive(Deserialize)]
+#[serde(rename_all = "kebab-case")]
+struct TypstSettings {
+    self_update: bool,
+}
+
 pub fn run_typst(ctx: &ExecutionContext) -> Result<()> {
     let typst = require("typst")?;
 
+    let raw_info = ctx
+        .execute(&typst)
+        .args(["info", "-f", "json"])
+        .output_checked_utf8()?
+        .stdout;
+    let info: TypstInfo = serde_json::from_str(&raw_info).wrap_err_with(|| {
+        output_changed_message!(
+            "typst info -f json",
+            "json output invalid or does not contain .build.settings.self-update"
+        )
+    })?;
+    if !info.build.settings.self_update {
+        return Err(SkipStep("This build of typst does not have self-update enabled".to_string()).into());
+    }
+
     print_separator("Typst");
 
     ctx.execute(typst).args(["update"]).status_checked()