Fix nasm in cross build #933

Cross.toml

@@ -0,0 +1,18 @@
+# [target.aarch64-unknown-linux-gnu]
+# pre-build = [
+#   "dpkg --add-architecture $CROSS_DEB_ARCH",
+#   "apt-get update",
+#   "apt-get install --assume-yes nasm:$CROSS_DEB_ARCH",
+# ]
+[target.x86_64-unknown-linux-musl]
+pre-build = [
+  "dpkg --add-architecture $CROSS_DEB_ARCH",
+  "apt-get update",
+  "apt-get install --assume-yes nasm",
+]
+# [target.armv7-unknown-linux-musleabihf]
+# pre-build = [
+#   "dpkg --add-architecture $CROSS_DEB_ARCH",
+#   "apt-get update",
+#   "apt-get install --assume-yes nasm:$CROSS_DEB_ARCH",
+# ]

Earthfile

@@ -33,6 +33,7 @@ docker-all:
 
 install:
   RUN apt-get update -qq
+  # Libraries that we install here, may also need to be added to `Cross.toml`
   # NASM is required for the image library
   RUN apt install nasm
   RUN rustup component add clippy
@@ -42,7 +43,7 @@ install:
 
 source:
   FROM +install
-  COPY --keep-ts Cargo.toml Cargo.lock ./
+  COPY --keep-ts Cargo.toml Cargo.lock Cross.toml ./
   COPY --keep-ts --dir server lib cli  ./
   COPY browser+build/dist /code/server/assets_tmp
   DO rust+CARGO --args=fetch
@@ -67,6 +68,7 @@ test:
 
 cross-build:
   FROM +source
+  # The TARGETs may need custom libraries defined in `atomic-server/Cross.toml`
   ARG --required TARGET
   DO rust+SET_CACHE_MOUNTS_ENV
   DO rust+CROSS --target ${TARGET}