Take hayro 0.6 and raise the MSRV to 1.92

Cargo.toml

@@ -2,7 +2,7 @@
 name = "tinydocs"
 version.workspace = true
 edition = "2024"
-rust-version = "1.88"
+rust-version = "1.92"
 license = "GPL-3.0-only"
 description = "Agent-friendly document synthesis and text extraction (DOCX, PPTX, PDF) in Rust."
 repository = "https://github.com/tinyhumansai/tinydocs"
@@ -54,7 +54,7 @@ quick-xml = { version = "0.42", optional = true }
 # Workbook row conversion for document-memory Markdown; implementation only.
 calamine = { version = "0.38", optional = true }
 # Pure Rust PDF rasterization, isolated from the default extraction build.
-hayro = { version = "0.5", optional = true }
+hayro = { version = "0.6", optional = true }
 
 [dev-dependencies]
 # Decode raster fixtures to assert scanned-page pixels survive rendering.

crates/tinydocs-module/Cargo.toml

@@ -2,7 +2,7 @@
 name = "tinydocs-module"
 version.workspace = true
 edition = "2024"
-rust-version = "1.88"
+rust-version = "1.92"
 license = "GPL-3.0-only"
 description = "Trusted TinyBus module adapter for TinyDocs."
 repository = "https://github.com/tinyhumansai/tinydocs"

docs/plans/document-intake-render.md

@@ -41,7 +41,7 @@ Run from the TinyDocs repository root:
 cargo fmt --all -- --check
 cargo test --workspace --all-features
 cargo clippy --workspace --all-targets --all-features -- -D warnings
-cargo +1.88.0 check --workspace --all-features
+cargo +1.92.0 check --workspace --all-features
 cargo deny --all-features check all
 ```
 

docs/specs/document-intake-render.md

@@ -55,7 +55,7 @@ Fixture tests verify ordered Office sections, shared/inline/cached worksheet
 values, mixed text/scanned PDFs, raster pixels and PNG dimensions, truncation,
 malformed XML, hostile ZIP metadata, and all documented budget rejections.
 Bus tests verify schema validation, streamed input, held output reads/releases,
-and rollback when a rendering output cannot be retained. MSRV is Rust 1.88.
+and rollback when a rendering output cannot be retained. MSRV is Rust 1.92 (hayro 0.6 needs it).
 
 ## Open questions
 

scripts/test-distro.sh

@@ -70,7 +70,7 @@ docker run --rm \
       exit 1
     }
     chmod +x "$installer"
-    "$installer" -y --profile minimal --default-toolchain 1.88.0 --no-modify-path
+    "$installer" -y --profile minimal --default-toolchain 1.92.0 --no-modify-path
     rm -f "$installer"
     source "$HOME/.cargo/env"
     actual_target="$(rustc -vV | sed -n "s/^host: //p")"

src/pdf_render/README.md

@@ -23,5 +23,5 @@ or renderer resources. A blocking-pool timeout is not cancellation. The host
 owns execution deadlines and any stronger process isolation. No network OCR
 or remote inference happens here.
 
-Hayro 0.5 and the resolved extraction/render dependency graph compile and test
-on the declared Rust 1.88 MSRV.
+Hayro 0.6 and the resolved extraction/render dependency graph compile and test
+on the declared Rust 1.92 MSRV; hayro 0.6's vello 0.0.7 needs 1.92.

src/pdf_render/mod.rs

@@ -86,6 +86,8 @@ pub fn render(bytes: &[u8], spec: &RenderPdfSpec) -> Result<PdfImages> {
         pages: Vec::new(),
     };
     let mut total_bytes = 0u64;
+    // One cache per document, reused across its pages, as hayro recommends.
+    let cache = hayro::RenderCache::new();
     for (number, width, height, scale) in plans {
         let page = &pdf.pages()[(number - 1) as usize];
         let settings = hayro::RenderSettings {
@@ -95,7 +97,7 @@ pub fn render(bytes: &[u8], spec: &RenderPdfSpec) -> Result<PdfImages> {
             y_scale: scale,
             bg_color: WHITE,
         };
-        let pixmap = hayro::render(page, &InterpreterSettings::default(), &settings);
+        let pixmap = hayro::render(page, &cache, &InterpreterSettings::default(), &settings);
         let bytes = pixmap.into_png().map_err(failed)?;
         total_bytes = total_bytes
             .checked_add(bytes.len() as u64)