clear messages

build-release.sh

@@ -7,11 +7,12 @@
 #
 # Copy it to the server, then: tar xzf movim-*.tar.gz && cd movim-* && ./install.sh
 #
-# Overridable: DEBIAN (default bookworm: Debian 12, also runs on 13 trixie),
-# RUST_IMAGE (default rust:1-$DEBIAN), DOCKER (default docker; podman works).
+# Overridable: DEBIAN (default trixie: Debian 13 and newer; bookworm for 12),
+# RUST_IMAGE (default rust:1-$DEBIAN), DOCKER (default docker; podman works),
+# REBUILD (yes/no; asked when a binary exists, default yes without a terminal).
 set -eu
 
-DEBIAN=${DEBIAN:-bookworm}
+DEBIAN=${DEBIAN:-trixie}
 RUST_IMAGE=${RUST_IMAGE:-rust:1-$DEBIAN}
 DOCKER=${DOCKER:-docker}
 
@@ -19,8 +20,6 @@ die() { echo "error: $*" >&2; exit 1; }
 
 cd "$(dirname "$0")"
 [ -f Cargo.toml ] || die "run this from the movim-rs repository"
-command -v "$DOCKER" >/dev/null || die "$DOCKER not found"
-"$DOCKER" info >/dev/null 2>&1 || die "cannot reach $DOCKER; start it (sudo systemctl start docker) and make sure you may use it (docker group)"
 
 version=$(sed -n 's/^version = "\(.*\)"/\1/p' Cargo.toml | head -n1)
 name="movim-$version-$DEBIAN"
@@ -29,20 +28,39 @@ name="movim-$version-$DEBIAN"
 cache="target/docker-$DEBIAN"
 mkdir -p "$cache/cargo"
 
-echo "==> Building $name in $RUST_IMAGE"
-"$DOCKER" run --rm \
-    --user "$(id -u):$(id -g)" \
-    -v "$PWD:/src" -w /src \
-    -e CARGO_HOME="/src/$cache/cargo" \
-    -e CARGO_TARGET_DIR="/src/$cache" \
-    "$RUST_IMAGE" \
-    sh -c 'rustc --version && cargo build --release --locked'
+bin="$cache/release/movim"
+rebuild=${REBUILD:-}
+if [ -z "$rebuild" ] && [ -x "$bin" ]; then
+    if [ -t 0 ]; then
+        printf 'A binary exists (built %s). Rebuild? [Y/n] ' "$(date -r "$bin" '+%Y-%m-%d %H:%M')"
+        read -r answer || answer=n
+        case $answer in [nN]*) rebuild=no ;; *) rebuild=yes ;; esac
+    else
+        rebuild=yes
+    fi
+fi
+
+if [ "$rebuild" = no ]; then
+    [ -x "$bin" ] || die "REBUILD=no but there is no binary at $bin"
+    echo "==> Reusing $bin"
+else
+    command -v "$DOCKER" >/dev/null || die "$DOCKER not found"
+    "$DOCKER" info >/dev/null 2>&1 || die "cannot reach $DOCKER; start it (sudo systemctl start docker) and make sure you may use it (docker group)"
+    echo "==> Building $name in $RUST_IMAGE"
+    "$DOCKER" run --rm \
+        --user "$(id -u):$(id -g)" \
+        -v "$PWD:/src" -w /src \
+        -e CARGO_HOME="/src/$cache/cargo" \
+        -e CARGO_TARGET_DIR="/src/$cache" \
+        "$RUST_IMAGE" \
+        sh -c 'rustc --version && cargo build --release --locked'
+fi
 
 echo "==> Packing dist/$name.tar.gz"
 stage=$(mktemp -d)
 trap 'rm -rf "$stage"' EXIT
 mkdir "$stage/$name"
-cp "$cache/release/movim" install.sh "$stage/$name/"
+cp "$bin" install.sh "$stage/$name/"
 cp -R frontend templates "$stage/$name/"
 mkdir -p dist
 tar -C "$stage" -czf "dist/$name.tar.gz" "$name"