Release prep: 0.5.0 and Linux riscv64 release build (#102)

- release.yml: new linux-riscv64 job, ported from GridCraft. Cross-compiles on
  ubuntu-24.04 against ports.ubuntu.com riscv64 libs (incl. libasound2-dev:riscv64),
  packages a tar.gz and smoke-tests deckcraft-cli --version under QEMU. The release
  job needs it, so the draft and SHA256SUMS include it.
- packaging/linux/package.sh: CROSS_ARCH/CROSS_TARGET/CROSS_COMPILE/EMULATOR support.
- README Downloads: list the riscv64 tarball.
- Version 0.4.0 -> 0.5.0 (cargo xtask version set).

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

.github/workflows/release.yml

@@ -370,11 +370,80 @@ jobs:
           path: dist/release/*
           if-no-files-found: error
 
+  linux-riscv64:
+    name: Linux riscv64
+    needs: version
+    # Cross-compiled on x86_64 (no hosted RISC-V runners) against the runner's own Ubuntu release
+    # from ports.ubuntu.com, so the binaries need that release's glibc (24.04: 2.39). 22.04's
+    # riscv64 ports lag its amd64 updates, which breaks the multiarch install. tar.gz only; the
+    # CLI is smoke-tested under QEMU.
+    runs-on: ubuntu-24.04
+    # No `environment: release`: this job signs nothing, so it gets no release secrets.
+    env:
+      DECKCRAFT_VERSION: ${{ needs.version.outputs.version }}
+      DECKCRAFT_BUILD_DATE: ${{ needs.version.outputs.date }}
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Check out craft-fonts
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          repository: storytold/craft-fonts
+          ref: ${{ env.CRAFT_FONTS_REF }}
+          path: craft-fonts
+      - uses: dtolnay/rust-toolchain@686976e191b89faba57d3206551f0f330d8cb249 # stable
+        with:
+          targets: riscv64gc-unknown-linux-gnu
+      - uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          key: release-linux-riscv64
+      - name: Apply version override
+        if: inputs.version != ''
+        run: cargo xtask version set "$DECKCRAFT_VERSION"
+      - name: Install cross-compilation dependencies
+        run: |
+          . /etc/os-release
+          sudo dpkg --add-architecture riscv64
+          # Pin the existing (archive.ubuntu.com) sources to amd64; riscv64 comes from ports.
+          if [ -f /etc/apt/sources.list.d/ubuntu.sources ]; then
+            sudo sed -i '/^Types: deb/a Architectures: amd64' /etc/apt/sources.list.d/ubuntu.sources
+          fi
+          if [ -f /etc/apt/sources.list ]; then
+            sudo sed -i 's/^deb /deb [arch=amd64] /g' /etc/apt/sources.list
+            sudo sed -i 's/^deb-src /deb-src [arch=amd64] /g' /etc/apt/sources.list
+          fi
+          for suite in "$VERSION_CODENAME" "$VERSION_CODENAME-updates" "$VERSION_CODENAME-security"; do
+            echo "deb [arch=riscv64] http://ports.ubuntu.com/ubuntu-ports $suite main universe restricted multiverse"
+          done | sudo tee /etc/apt/sources.list.d/riscv64.list
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends \
+            gcc-riscv64-linux-gnu binutils-riscv64-linux-gnu libc6-dev-riscv64-cross libc6-dev:riscv64 qemu-user \
+            libasound2-dev:riscv64 libxkbcommon-dev:riscv64 libwayland-dev:riscv64 libx11-dev:riscv64 \
+            libxrandr-dev:riscv64 libxi-dev:riscv64 libgl1-mesa-dev:riscv64
+      - name: Build and package (tar.gz)
+        env:
+          CRAFT_FONTS_DIR: ${{ github.workspace }}/craft-fonts
+          CRAFT_FONTS_REQUIRED: "1"
+          CARGO_TARGET_RISCV64GC_UNKNOWN_LINUX_GNU_LINKER: riscv64-linux-gnu-gcc
+          PKG_CONFIG_SYSROOT_DIR: /
+          PKG_CONFIG_PATH: /usr/lib/riscv64-linux-gnu/pkgconfig:/usr/share/pkgconfig
+          PKG_CONFIG_ALLOW_CROSS: "1"
+          CROSS_ARCH: riscv64
+          CROSS_TARGET: riscv64gc-unknown-linux-gnu
+          CROSS_COMPILE: riscv64-linux-gnu-
+          EMULATOR: qemu-riscv64
+          QEMU_LD_PREFIX: /usr/riscv64-linux-gnu
+        run: packaging/linux/package.sh --formats tar
+      - uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
+        with:
+          name: release-linux-riscv64
+          path: dist/release/*.tar.gz
+          if-no-files-found: error
+
   release:
     name: Draft GitHub Release
     # Every build is required, so the draft always has the full set the README lists. Needing the
     # signed jobs also keeps branch dry runs from drafting a release.
-    needs: [version, macos, windows, linux, flatpak, freebsd, web]
+    needs: [version, macos, windows, linux, linux-riscv64, flatpak, freebsd, web]
     runs-on: ubuntu-latest
     environment: release
     permissions:

Cargo.lock

@@ -877,7 +877,7 @@ checksum = "0c87e182de0887fd5361989c677c4e8f5000cd9491d6d563161a8f3a5519fc7f"
 
 [[package]]
 name = "deckcraft"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "arboard",
  "cpal",
@@ -896,7 +896,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-anim"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-geom",
  "deckcraft-model",
@@ -905,7 +905,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-av1"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-bitstream",
  "rayon",
@@ -914,14 +914,14 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-bitstream"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "proptest",
 ]
 
 [[package]]
 name = "deckcraft-cli"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-engine",
  "deckcraft-mcp",
@@ -930,14 +930,14 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-color"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "serde",
 ]
 
 [[package]]
 name = "deckcraft-engine"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-color",
  "deckcraft-fonts",
@@ -959,7 +959,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-fonts"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "epaint_default_fonts",
  "harfrust 0.13.3",
@@ -971,7 +971,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-format"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-model",
  "serde",
@@ -982,7 +982,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-geom"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "kurbo",
  "serde",
@@ -990,7 +990,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-h264"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-bitstream",
  "rayon",
@@ -999,7 +999,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-hevc"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-bitstream",
  "rayon",
@@ -1008,7 +1008,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-isobmff"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-bitstream",
  "thiserror 2.0.21",
@@ -1016,11 +1016,11 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-matroska"
-version = "0.4.0"
+version = "0.5.0"
 
 [[package]]
 name = "deckcraft-mcp"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-engine",
  "deckcraft-render",
@@ -1030,7 +1030,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-media"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-av1",
  "deckcraft-h264",
@@ -1048,7 +1048,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-model"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-color",
  "deckcraft-geom",
@@ -1059,15 +1059,15 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-ogg"
-version = "0.4.0"
+version = "0.5.0"
 
 [[package]]
 name = "deckcraft-opus"
-version = "0.4.0"
+version = "0.5.0"
 
 [[package]]
 name = "deckcraft-pdf"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-fonts",
  "deckcraft-model",
@@ -1082,7 +1082,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-pptx"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-color",
  "deckcraft-engine",
@@ -1098,7 +1098,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-render"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-color",
  "deckcraft-fonts",
@@ -1114,7 +1114,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-text"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "chrono",
  "deckcraft-color",
@@ -1128,7 +1128,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-ui-egui"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-anim",
  "deckcraft-color",
@@ -1150,7 +1150,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-vp9"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-bitstream",
  "rayon",
@@ -1159,7 +1159,7 @@ dependencies = [
 
 [[package]]
 name = "deckcraft-web"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "deckcraft-engine",
  "deckcraft-ui-egui",
@@ -5655,7 +5655,7 @@ checksum = "9440ea3e5aeabb0ac63af70daf835274065238cdd0cec83418f417eae38bacee"
 
 [[package]]
 name = "xtask"
-version = "0.4.0"
+version = "0.5.0"
 dependencies = [
  "serde_json",
 ]

Cargo.toml

@@ -4,7 +4,7 @@ members = ["crates/*", "apps/*", "xtask"]
 default-members = ["crates/*", "apps/deckcraft", "apps/deckcraft-cli"]
 
 [workspace.package]
-version = "0.4.0"
+version = "0.5.0"
 edition = "2024"
 license = "MIT OR Apache-2.0"
 rust-version = "1.90"

README.md

@@ -207,6 +207,8 @@ and web backend defaults are unchanged.
 | Fedora/RHEL/openSUSE | `deckcraft-<ver>-linux-x86_64.rpm` | `deckcraft-<ver>-linux-aarch64.rpm` | |
 | Tarball | `deckcraft-<ver>-linux-x86_64.tar.gz` | `deckcraft-<ver>-linux-aarch64.tar.gz` | Unpack anywhere |
 
+RISC-V 64 (riscv64): `deckcraft-<ver>-linux-riscv64.tar.gz`, a tarball only (cross-compiled; needs glibc 2.39+, e.g. Ubuntu 24.04+).
+
 ### FreeBSD
 
 | Build | File |

packaging/linux/package.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Build and package DeckCraft for Linux (<arch> is x86_64 or aarch64):
+# Build and package DeckCraft for Linux (<arch> is x86_64 or aarch64, or riscv64 when cross-compiling):
 #
 #   $DIST/deckcraft-<version>-linux-<arch>.AppImage  any distro with glibc >= the build host's
 #   $DIST/deckcraft-<version>-linux-<arch>.AppImage.zsync  delta updates (needs zsyncmake)
@@ -30,8 +30,9 @@ while [ $# -gt 0 ]; do
   esac
 done
 
-ARCH="$(uname -m)"
+ARCH="${CROSS_ARCH:-$(uname -m)}"
 case "$ARCH" in
+  riscv64) DEB_ARCH=riscv64 ;;
   x86_64) DEB_ARCH=amd64 ;;
   aarch64 | arm64) ARCH=aarch64; DEB_ARCH=arm64 ;;
   *) echo "unsupported architecture $ARCH" >&2; exit 2 ;;
@@ -42,9 +43,13 @@ BASENAME="deckcraft-$VERSION-linux-$ARCH"
 echo "==> DeckCraft $VERSION for Linux $ARCH ($FORMATS)"
 
 if [ "$SKIP_BUILD" = 0 ]; then
+  if [ -n "${CROSS_TARGET:-}" ]; then
+    (cd "$ROOT" && cargo build --release --locked -p deckcraft -p deckcraft-cli --target "$CROSS_TARGET")
+  else
     (cd "$ROOT" && cargo build --release --locked -p deckcraft -p deckcraft-cli)
   fi
-BIN="$CARGO_TARGET_DIR/release"
+fi
+BIN="$CARGO_TARGET_DIR/${CROSS_TARGET:+$CROSS_TARGET/}release"
 WORK="$CARGO_TARGET_DIR/linux-package"
 STAGE="$WORK/root"
 rm -rf "$WORK"
@@ -52,7 +57,7 @@ rm -rf "$WORK"
 # ---- stage an FHS tree (shared by every format) -------------------------------------------------
 install -Dm755 "$BIN/deckcraft" "$STAGE/usr/bin/deckcraft"
 install -Dm755 "$BIN/deckcraft-cli" "$STAGE/usr/bin/deckcraft-cli"
-strip "$STAGE/usr/bin/deckcraft" "$STAGE/usr/bin/deckcraft-cli" 2>/dev/null || true
+"${CROSS_COMPILE:-}strip" "$STAGE/usr/bin/deckcraft" "$STAGE/usr/bin/deckcraft-cli" 2>/dev/null || true
 install -Dm644 "$HERE/$APP_ID.desktop" "$STAGE/usr/share/applications/$APP_ID.desktop"
 install -Dm644 "$HERE/$APP_ID.mime.xml" "$STAGE/usr/share/mime/packages/$APP_ID.xml"
 mkdir -p "$STAGE/usr/share/metainfo"
@@ -135,6 +140,10 @@ if has appimage; then
   fi
 fi
 
+if [ -z "${CROSS_TARGET:-}" ]; then
   "$STAGE/usr/bin/deckcraft-cli" --version
+elif [ -n "${EMULATOR:-}" ]; then
+  "$EMULATOR" "$STAGE/usr/bin/deckcraft-cli" --version
+fi
 echo "==> done"
 ls -lh "$DIST"