diff --git a/CURATORS.md b/CURATORS.md
index 84f5361d8..90507f8ca 100644
--- a/CURATORS.md
+++ b/CURATORS.md
@@ -308,7 +308,7 @@ info above).
 ### Building LTS minor releases
 Before running the build, please make sure that the Dockerfile in `automated/dockerfiles/lts-X.Y` is up to date, where X is the major version that you're building and Y is the latest minor version of X for which a Dockerfile exists.
   * If any changes need to be made, (eg, new GHC version), copy `automated/lts-X.Y/Dockerfile` to `automated/lts-X.Z/Dockerfile`, where Z is the minor version you're building, and include the new changes.
-  * If you are building the first release of a new LTS major version, create a new `lts-X.Z/Dockerfile` based on the previous LTS's, and adjust the variables at the top to match the requirements of the snapshot.  Ensure that `STACK_VERSION` is the latest release of Stack, and `BOOTSTRAP_COMMIT` is the commit ID of this repo containing the version of the `bootstrap-commit.sh` used to build the snapshot.  Also ensure the FROM image's Ubuntu version matches that used in the [root Dockerfile](Dockerfile) used to build this snapshot.
+  * If you are building the first release of a new LTS major version, create a new `lts-X.0/Dockerfile` based on the previous LTS's, and adjust the variables at the top to match the requirements of the snapshot.  Ensure that `STACK_VERSION` is the latest release of Stack, and `BOOTSTRAP_COMMIT` is the commit ID of this repo containing the version of the `bootstrap-commit.sh` used to build the snapshot.  Also ensure the FROM image's Ubuntu version matches that used in the [root Dockerfile](Dockerfile) used to build this snapshot.
 
 First run `build.sh` to regenerate updated `ltsXX/work/constraints.yaml` and `ltsXX/work/snapshot-incomplete.yaml` files.
 
@@ -354,7 +354,7 @@ resolve any issues before the next curator shift the coming monday.
 
 * You can detect the problem by running `df`. If you see that `/` is out of space, we have a problem.
 * If you see that `/var/stackage/` is out of space, you can:
-  * run `./etc/diskspace/clean-old-stack-libs.hs [nightly|lts-XX]`
+  * run `./etc/diskspace/remove-old-stack-work-libs.hs [nightly|lts-XX]`
   * If that is insufficient then remove all the old builds under the previous ghc/Cabal version:
     * `rm -r /var/stackage/stackage/automated/work/[nightly|lts-XX]/unpack-dir/unpacked/*/.stack-work/dist/x86_64-linux/Cabal-X.Y.0.0/`
 
diff --git a/automated/build.sh b/automated/build.sh
index 1946a166f..9676ae5f6 100755
--- a/automated/build.sh
+++ b/automated/build.sh
@@ -64,13 +64,19 @@ BINDIR=$(cd $ROOT/work/bin ; pwd)
 cd $BINDIR
 rm -f curator stack *.bz2
 
-curl -L "https://github.com/commercialhaskell/curator/releases/download/commit-4ae7a59717f163e15c69ddf75d31d0f775de2561/curator.bz2" | bunzip2 > curator
+curl -L "https://github.com/commercialhaskell/curator/releases/download/commit-45c4eb5cb7f233c06544843bb479616d63380363/curator.bz2" | bunzip2 > curator
 chmod +x curator
 echo -n "curator version: "
 docker run --rm -v $(pwd)/curator:/exe $IMAGE /exe --version
 
-STACK_VERSION=2.11.1
-curl -L https://github.com/commercialhaskell/stack/releases/download/v${STACK_VERSION}/stack-${STACK_VERSION}-linux-x86_64-bin > stack
+if [ $SHORTNAME = "lts" ]
+then
+   STACK_VERSION=2.11.1
+   curl -L https://github.com/commercialhaskell/stack/releases/download/v${STACK_VERSION}/stack-${STACK_VERSION}-linux-x86_64-bin > stack
+else
+   STACK_VERSION=2.13.0.1
+   curl -L https://github.com/commercialhaskell/stack/releases/download/rc%2Fv${STACK_VERSION}/stack-${STACK_VERSION}-linux-x86_64-bin > stack
+fi
 chmod +x stack
 echo -n "stack version: "
 docker run --rm -v $(pwd)/stack:/exe $IMAGE /exe --version
diff --git a/automated/dockerfiles/lts-21.12/Dockerfile b/automated/dockerfiles/lts-21.12/Dockerfile
new file mode 100644
index 000000000..eb95a9cb3
--- /dev/null
+++ b/automated/dockerfiles/lts-21.12/Dockerfile
@@ -0,0 +1,90 @@
+FROM ubuntu:22.04
+
+LABEL maintainer="manny@fpcomplete.com"
+
+ARG GHC_VERSION=9.4.7
+ARG LTS_SLUG=lts-21.12
+ARG PID1_VERSION=0.1.2.0
+ARG STACK_VERSION=2.11.1
+ARG CUDA_VERSION=10.0
+ARG JVM_PATH=/usr/lib/jvm/java-8-openjdk-amd64
+ARG LLVM_PATH=/usr/lib/llvm-9
+ARG BOOTSTRAP_COMMIT=56d27e1cfead1a37ff55942a9d2f14c0733459c9
+
+ARG DEBIAN_FRONTEND=noninteractive
+ARG VARIANT=build
+ARG STACK_ROOT=/home/stackage/.stack
+
+#
+# Set encoding to UTF-8 and PATH to find GHC and cabal/stack-installed binaries.
+#
+
+ENV LANG=C.UTF-8 \
+    LC_ALL=C.UTF-8 \
+    PATH=/root/.local/bin:/usr/local/cuda-$CUDA_VERSION/bin:$STACK_ROOT/programs/x86_64-linux/ghc-$GHC_VERSION/bin:$PATH \
+    CUDA_PATH=/usr/local/cuda-$CUDA_VERSION \
+    CPATH=$JVM_PATH/include:$JVM_PATH/include/linux:$LLVM_PATH/include
+
+#
+# Install pre-requisites
+#
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        wget netbase ca-certificates g++ gcc libc6-dev libffi-dev libgmp-dev \
+        make xz-utils zlib1g-dev git gnupg libtinfo-dev jq && \
+    rm -rf /var/lib/apt/lists/*
+
+#
+# Use Stackage's docker/*.sh scripts to install system libraries and
+# tools required to build any Stackage package.
+# Re-installs 'stack' *after* running docker/*.sh since that may have
+# installed a different version.
+# In the case of 'small' image, just install Stack and GHC.
+#
+
+RUN if [ "$VARIANT" != "small" ]; then \
+        wget -qO- https://raw.githubusercontent.com/commercialhaskell/stackage/$BOOTSTRAP_COMMIT/docker/01-build-server.sh https://raw.githubusercontent.com/commercialhaskell/stackage/$BOOTSTRAP_COMMIT/docker/02-apt-get-install.sh https://raw.githubusercontent.com/commercialhaskell/stackage/$BOOTSTRAP_COMMIT/docker/03-custom-install.sh https://raw.githubusercontent.com/commercialhaskell/stackage/$BOOTSTRAP_COMMIT/docker/04-cleanup.sh | sed "s/^GHCVER=9.0.1$/GHCVER=$GHC_VERSION/" | GHCVER=$GHC_VERSION bash; \
+    fi && \
+    wget -qO- https://github.com/commercialhaskell/stack/releases/download/v$STACK_VERSION/stack-$STACK_VERSION-linux-x86_64.tar.gz | tar xz --wildcards --strip-components=1 -C /usr/bin '*/stack' && \
+    if [ "$VARIANT" = "small" ]; then \
+        stack setup --resolver ghc-$GHC_VERSION; \
+    fi && \
+    rm -rf /var/lib/apt/lists/* && \
+    cd $STACK_ROOT && \
+    find . -type f -not -path "./programs/x86_64-linux/ghc-$GHC_VERSION/*" -exec rm '{}' \; && \
+    find . -type d -print0 |sort -rz |xargs -0 rmdir 2>/dev/null || true
+
+#
+# Configure Stack to use the GHC installed in the Docker image rather than installing its own
+#
+
+RUN mkdir /etc/stack/ && \
+    echo "system-ghc: true" >/etc/stack/config.yaml
+
+#
+# Use 'stack' to install basic Haskell tools like alex, happy, and cpphs. We
+# remove most of the STACK_ROOT afterward to save space, but keep the 'share'
+# files that some of these tools require.
+#
+
+RUN stack --resolver=$LTS_SLUG --local-bin-path=/usr/bin install \
+        happy alex cpphs gtk2hs-buildtools hscolour hlint hindent && \
+    cd $STACK_ROOT && \
+    find . -type f -not -path './snapshots/*/share/*' -and -not -path "./programs/x86_64-linux/ghc-$GHC_VERSION/*" -exec rm '{}' \; && \
+    find . -type d -print0 |sort -rz |xargs -0 rmdir 2>/dev/null || true
+
+#
+# Install 'pid1' init daemon
+#
+
+RUN wget -O- "https://github.com/fpco/pid1/releases/download/v$PID1_VERSION/pid1-$PID1_VERSION-linux-x86_64.tar.gz" | tar xzf - -C /usr/local && \
+    chown root:root /usr/local/sbin && \
+    chown root:root /usr/local/sbin/pid1
+
+#
+# Set up pid1 entrypoint and default command
+#
+
+ENTRYPOINT ["/usr/local/sbin/pid1"]
+CMD ["bash"]
diff --git a/build-constraints.yaml b/build-constraints.yaml
index c0c7cac43..c3b511498 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -121,6 +121,7 @@ packages:
         - newtype
         - resolv
         - blaze-builder
+        - netrc
 
         # Some "grandfathered dependencies" I took over because I contributed to them at some time.
         # Feel free to snatch them from me!
@@ -352,10 +353,10 @@ packages:
     "Scott N. Walck <walck@lvc.edu> @walck":
         - cyclotomic
         - learn-physics
-
-        # @ghorn
-        - not-gloss
-        - spatial-math
+        - SpatialMath
+        - Vis
+        - LPFP
+        - LPFP-core
 
     "Phil de Joux <phil.dejoux@blockscope.com> @philderbeast":
         - siggy-chardust
@@ -568,6 +569,7 @@ packages:
         - explicit-exception
         - fixed-length
         - fftw-ffi
+        - ghostscript-parallel
         - gnuplot
         - group-by-date
         - guarded-allocation
@@ -588,6 +590,7 @@ packages:
         - non-negative
         - numeric-prelude
         - numeric-quest
+        - ods2csv
         - pathtype
         - pooled-io
         - probability
@@ -1326,8 +1329,8 @@ packages:
         - liquid-fixpoint
 
     "Daniel Casanueva <daniel.casanueva@proton.me> @Daniel-Diaz":
-        - bimap-server
         - binary-list
+        - bounded-qsem
         - byteset
         - Clipboard
         - gmail-simple
@@ -1837,6 +1840,7 @@ packages:
         - http-query
         - hwk
         - koji
+        - koji-tool
         - pagure
         - pagure-cli
         - pdc
@@ -4510,7 +4514,6 @@ packages:
     "Domen Kozar <domen@enlambda.com> @domenkozar":
         - elm2nix < 0 # 0.3.0 compile fail
         - mixpanel-client < 0 # 0.3.0 aeson 2, https://github.com/commercialhaskell/stackage/issues/6443
-        - netrc
         - pretty-sop
         - servant-auth
         - servant-auth-server
@@ -4898,6 +4901,7 @@ packages:
 
     "8c6794b6 <8c6794b6@gmail.com> @8c6794b6":
         - hpc-codecov
+        - miniterion
 
     "Hiromi Ishii <konn.jinro@gmail.com> @konn":
         - equational-reasoning
@@ -5240,6 +5244,7 @@ packages:
         - toml-parser
 
     "Andreas Ländle @alaendle":
+        - co-log
         - co-log-core
         - co-log-polysemy
 
@@ -8277,6 +8282,13 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/7106
         - tls < 1.9
 
+        # https://github.com/commercialhaskell/stackage/issues/7111
+        - tasty < 1.5
+        - tasty-quickcheck < 0.10.3
+
+        # https://github.com/commercialhaskell/stackage/issues/7124
+        - mpi-hs < 0.7.3
+
     # end of Stackage upper bounds
 # end of packages
 
@@ -8970,6 +8982,7 @@ expected-test-failures:
     - distributed-process
     - distributed-process-execution # https://github.com/haskell-distributed/distributed-process-execution/issues/2
     - distributed-process-task
+    - dl-fedora # status 404 on http download
     - fft # test-fft:  exited with: ExitFailure (-11)
     - foldl-statistics # https://github.com/data61/foldl-statistics/issues/2
     - friday # https://github.com/RaphaelJ/friday/issues/37
@@ -9018,7 +9031,6 @@ expected-test-failures:
     - dbcleaner # Requires running PostgreSQL server
     - dbmigrations # PostgreSQL
     - dbus # #6373/closed
-    - dl-fedora # status 404 on http download
     - dns # https://github.com/commercialhaskell/stackage/issues/6374
     - drifter-postgresql # PostgreSQL
     - egison # executable not found https://github.com/egison/egison/issues/250
@@ -9160,6 +9172,7 @@ expected-test-failures:
     - character-cases # 0.1.0.6 https://github.com/aiya000/hs-character-cases/issues/3
     - codec-beam # 0.2.0 posix_spawnp: does not exist
     - colonnade # 1.2.0.2 https://github.com/andrewthad/colonnade/issues/31
+    - context-wai-middleware # 0.2.0.1 https://github.com/jship/context/issues/3
     - control-dsl # 0.2.1.3
     - crypt-sha512 # 0 Use -p '/crypt.$6$rounds=10$roundstoolow/' to rerun this test only.
     - curl-runnings # 0.17.0
@@ -9169,6 +9182,7 @@ expected-test-failures:
     - fixed-vector-hetero # 0.6.1.1
     - generic-optics # 2.2.1.0 optimization output https://github.com/kcsongor/generic-lens/issues/133
     - github-types # https://github.com/commercialhaskell/stackage/issues/6549
+    - hakyll # https://github.com/commercialhaskell/stackage/issues/7110
     - haskoin-node # https://github.com/commercialhaskell/stackage/issues/6769
     - heist # https://github.com/commercialhaskell/stackage/issues/6765
     - hgeometry-combinatorial # 0.14
diff --git a/etc/diskspace/remove-old-stack-work-libs.hs b/etc/diskspace/remove-old-stack-work-libs.hs
index 08486eef3..f39622572 100755
--- a/etc/diskspace/remove-old-stack-work-libs.hs
+++ b/etc/diskspace/remove-old-stack-work-libs.hs
@@ -111,7 +111,7 @@ withOneDirectory_ act = do
     [l] -> withCurrentDirectory l act
     _ -> do
       cwd <- getCurrentDirectory
-      error $ "more than one directory found in " ++ cwd ++ ": " ++ unwords ls
+      error $ show (length ls) ++ " directories found in " ++ cwd ++ ": " ++ unwords ls
 
 withOneDirectory :: (FilePath -> IO a) -> IO a
 withOneDirectory act = do
@@ -120,4 +120,4 @@ withOneDirectory act = do
     [l] -> withCurrentDirectory l $ act l
     _ -> do
       cwd <- getCurrentDirectory
-      error $ "more than one directory found in " ++ cwd ++ ": " ++ unwords ls
+      error $ show (length ls) ++ " directories found in " ++ cwd ++ ": " ++ unwords ls