Add bullseye variant of 9.6.6 images

[jhrcek]

I'm trying to emulate what was done for 9.10 in #134

I basically copy-pasted buster dockerfiles, and just changed deb10 -> deb11 (+ updated checksums).
After noticing that deb11 variant of 9.6.6 ghc binaries don't exist, I asked on ghc matrix and Julian Osphald (ghcup dev) told me it shouldn't matter, because deb10 binaries should be binary compatible with deb11, so I should use those insead.

Here's the output of git diff --no-index 9.6/slim-buster/Dockerfile 9.6/slim-bullseye/Dockerfile which makes it clearer how the new bullseye images differ from buster ones.

diff --git a/9.6/slim-buster/Dockerfile b/9.6/slim-bullseye/Dockerfile
index 66d2100..837726b 100644
--- a/9.6/slim-buster/Dockerfile
+++ b/9.6/slim-bullseye/Dockerfile
@@ -1,4 +1,4 @@
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 ENV LANG C.UTF-8
 
@@ -63,16 +63,16 @@ ARG CABAL_INSTALL_RELEASE_KEY=EAF2A9A722C0C96F2B431CA511AAD8CEDEE0CAEF
 RUN set -eux; \
     cd /tmp; \
     ARCH="$(dpkg-architecture --query DEB_BUILD_GNU_CPU)"; \
-    CABAL_INSTALL_TAR="cabal-install-$CABAL_INSTALL-$ARCH-linux-deb10.tar.xz"; \
+    CABAL_INSTALL_TAR="cabal-install-$CABAL_INSTALL-$ARCH-linux-deb11.tar.xz"; \
     CABAL_INSTALL_URL="https://downloads.haskell.org/~cabal/cabal-install-$CABAL_INSTALL/$CABAL_INSTALL_TAR"; \
     CABAL_INSTALL_SHA256SUMS_URL="https://downloads.haskell.org/~cabal/cabal-install-$CABAL_INSTALL/SHA256SUMS"; \
     # sha256 from https://downloads.haskell.org/~cabal/cabal-install-$CABAL_INSTALL/SHA256SUMS
     case "$ARCH" in \
         'aarch64') \
-            CABAL_INSTALL_SHA256='92d341620c60294535f03098bff796ef6de2701de0c4fcba249cde18a2923013'; \
+            CABAL_INSTALL_SHA256='e0b6604d3596c5e5b7236e79ff4f5aa8af337792bf69ac4a90634c761f1b9ed5'; \
             ;; \
         'x86_64') \
-            CABAL_INSTALL_SHA256='1d7a7131402295b01f25be5373fde095a404c45f9b5a5508fb7474bb0d3d057a'; \
+            CABAL_INSTALL_SHA256='12d018bdd07efed470f278f22d94b33655c4fcbc44d28d97b5ebb7944d5607c5'; \
             ;; \
         *) echo >&2 "error: unsupported architecture '$ARCH'"; exit 1 ;; \
     esac; \
@@ -100,14 +100,17 @@ ARG GHC_RELEASE_KEY=88B57FCF7DB53B4DB3BFA4B1588764FBE22D19C4
 RUN set -eux; \
     cd /tmp; \
     ARCH="$(dpkg-architecture --query DEB_BUILD_GNU_CPU)"; \
-    GHC_URL="https://downloads.haskell.org/~ghc/$GHC/ghc-$GHC-$ARCH-deb10-linux.tar.xz"; \
     # sha256 from https://downloads.haskell.org/~ghc/$GHC/SHA256SUMS
     case "$ARCH" in \
         'aarch64') \
+            # Note: the 'aarch64-deb11' (bullseye) variant of images doesn't exist in https://downloads.haskell.org/~ghc/9.6.6/
+            # But deb10 (buster) images should be binary compatible with deb11, so using deb10 instead
+            GHC_URL="https://downloads.haskell.org/~ghc/$GHC/ghc-$GHC-$ARCH-deb10-linux.tar.xz"; \
             GHC_SHA256='58d5ce65758ec5179b448e4e1a2f835924b4ada96cf56af80d011bed87d91fef'; \
             ;; \
         'x86_64') \
-            GHC_SHA256='15ee68cede5d114a672fb468b9545700edd70a68724ab4e9122c8a23aba8570b'; \
+            GHC_URL="https://downloads.haskell.org/~ghc/$GHC/ghc-$GHC-$ARCH-deb11-linux.tar.xz"; \
+            GHC_SHA256='a34bdfc1f65b000135d9c8eb12d69670026a64043a8b33ef5ba24b0f8e28d046'; \
             ;; \
         *) echo >&2 "error: unsupported architecture '$ARCH'" ; exit 1 ;; \
     esac; \

[develop7]

Hi, I still can't see any 9.6.6-bullseye jobs on aarch64 so far

[jhrcek]

There you go, added 9.10 and 9.6 aarch64 jobs.
Do you find the "deb10 ghc binaries in bullseye" workaround acceptable?

[develop7]

As long as it passes tests, yes, it's probably fine. I've tried it myself, but it failed for some reason.

[develop7]

Fix deps (my bad originally, for which I'm sorry)

[jhrcek]

I've tried it myself, but it failed for some reason.

Looking at your PR (which I didn't notice exists 😅 ) I see you got the same error as me

WARNING: The requested image's platform (linux/arm64/v8) does not match the detected host platform (linux/amd64/v3) and no specific platform was requested
25l[+] Building 0.0s (0/0) docker:default
25hERROR: "" is an invalid component of "linux/": platform specifier component must match "^[A-Za-z0-9_-]+$": invalid argument

..which I fixed by adding explicit docker_platform argument here

[develop7]

LGTM, thank you

[develop7]

which I fixed by adding explicit docker_platform argument here

oh that's how it's done. Thank you!