CI: Switch from macos-12 to macos-13

GitHub Actions is removing support for `macos-12` (see
actions/runner-images#10721), so this switches
Cryptol's CI from `macos-12` to `macos-13` in order to support an x86-64
version of macOS. This also updates the associated documentation in the
`README` and the `dev/dev_setup.sh` script accordingly.

.github/workflows/ci.yml

@@ -15,7 +15,8 @@ env:
   # - Dockerfile
   # - cryptol-remote-api/Dockerfile
   # - README.md
-  SOLVER_PKG_VERSION: "snapshot-20240212"
+  # - dev/dev_setup.sh
+  SOLVER_PKG_VERSION: "snapshot-20241119"
   # The CACHE_VERSION can be updated to force the use of a new cache if
   # the current cache contents become corrupted/invalid.  This can
   # sometimes happen when (for example) the OS version is changed but
@@ -78,12 +79,12 @@ jobs:
             run-tests: false
           # Windows and macOS CI runners are more expensive than Linux runners,
           # so we only build one particular GHC version to test them on. We
-          # include both an x86-64 macOS runner (macos-12) as well as an AArch64
+          # include both an x86-64 macOS runner (macos-13) as well as an AArch64
           # macOS runner (macos-14).
           - os: windows-2019
             ghc-version: 9.4.8
             run-tests: true
-          - os: macos-12
+          - os: macos-13
             ghc-version: 9.4.8
             run-tests: true
           - os: macos-14
@@ -276,7 +277,7 @@ jobs:
             continue-on-error: false
           #- suite: rpc
           #  target: ''
-          #  os: macos-12
+          #  os: macos-13
           #  continue-on-error: false
           #- suite: rpc
           #  target: ''

Dockerfile

@@ -18,7 +18,7 @@ RUN mkdir -p rootfs/usr/local/bin
 WORKDIR /cryptol/rootfs/usr/local/bin
 # The URL here is based on the same logic used to specify BIN_ZIP_FILE in
 # `.github/workflow/ci.yml`, but specialized to x86-64 Ubuntu.
-RUN curl -o solvers.zip -sL "https://github.com/GaloisInc/what4-solvers/releases/download/snapshot-20240212/ubuntu-22.04-X64-bin.zip"
+RUN curl -o solvers.zip -sL "https://github.com/GaloisInc/what4-solvers/releases/download/snapshot-20241119/ubuntu-22.04-X64-bin.zip"
 RUN unzip solvers.zip && rm solvers.zip && chmod +x *
 WORKDIR /cryptol
 ENV PATH=/cryptol/rootfs/usr/local/bin:/home/cryptol/.local/bin:/home/cryptol/.ghcup/bin:$PATH

README.md

@@ -46,7 +46,7 @@ Cryptol currently uses Microsoft Research's [Z3 SMT
 solver](https://github.com/Z3Prover/z3) by default to solve constraints
 during type checking, and as the default solver for the `:sat` and
 `:prove` commands.  Cryptol generally requires the most recent version
-of Z3, but you can see the specific version tested in CI by looking [here](https://github.com/GaloisInc/what4-solvers/releases/tag/snapshot-20240212).
+of Z3, but you can see the specific version tested in CI by looking [here](https://github.com/GaloisInc/what4-solvers/releases/tag/snapshot-20241119).
 
 You can download Z3 binaries for a variety of platforms from their
 [releases page](https://github.com/Z3Prover/z3/releases). If you
@@ -74,10 +74,11 @@ on [GitHub](https://github.com/GaloisInc/cryptol).
 Cryptol builds and runs on various flavors of Linux, Mac OS X, and
 Windows. We regularly build and test it in the following environments:
 
-- macOS 12, 64-bit
-- Ubuntu 20.04, 64-bit
-- Ubuntu 22.04, 64-bit
-- Windows Server 2019, 64-bit
+- macOS 13 (x86-64)
+- macOS 14 (ARM64)
+- Ubuntu 20.04 (x86-64)
+- Ubuntu 22.04 (x86-64)
+- Windows Server 2019 (x86-64)
 
 ## Prerequisites
 

cryptol-remote-api/Dockerfile

@@ -82,7 +82,7 @@ RUN mkdir -p rootfs/"${CRYPTOLPATH}" \
 WORKDIR /cryptol/rootfs/usr/local/bin
 # The URL here is based on the same logic used to specify BIN_ZIP_FILE in
 # `.github/workflow/ci.yml`, but specialized to x86-64 Ubuntu.
-RUN curl -sL -o solvers.zip "https://github.com/GaloisInc/what4-solvers/releases/download/snapshot-20240212/ubuntu-22.04-X64-bin.zip" && \
+RUN curl -sL -o solvers.zip "https://github.com/GaloisInc/what4-solvers/releases/download/snapshot-20241119/ubuntu-22.04-X64-bin.zip" && \
     unzip solvers.zip && rm solvers.zip && chmod +x *
 USER root
 RUN chown -R root:root /cryptol/rootfs

dev/dev_setup.sh

@@ -17,7 +17,7 @@
 # - In Ubuntu, we assume that the system has already run `apt-get update`
 # - In macOS, we assume the system has `brew` installed and on the path
 #
-# There is some half-baked support for macOS 12 (x86_64),
+# There is some half-baked support for macOS 13 (x86_64),
 # but it hasn't been tested.
 #
 
@@ -37,9 +37,9 @@ GHCUP_URL="https://downloads.haskell.org/~ghcup"
 GHC_VERSION="9.4.8"
 CABAL_VERSION="3.10.3.0"
 
-WHAT4_SOLVERS_SNAPSHOT="snapshot-20240212"
+WHAT4_SOLVERS_SNAPSHOT="snapshot-20241119"
 WHAT4_SOLVERS_URL="https://github.com/GaloisInc/what4-solvers/releases/download/$WHAT4_SOLVERS_SNAPSHOT"
-WHAT4_SOLVERS_MACOS_12="macos-12-X64-bin.zip"
+WHAT4_SOLVERS_MACOS_13="macos-13-X64-bin.zip"
 WHAT4_SOLVERS_MACOS_14="macos-14-ARM64-bin.zip"
 WHAT4_SOLVERS_UBUNTU_20="ubuntu-20.04-X64-bin.zip"
 WHAT4_SOLVERS_UBUNTU_22="ubuntu-22.04-X64-bin.zip"
@@ -49,7 +49,7 @@ WHAT4_Z3_VERSION="version 4.8.14"
 
 # Set of supported platforms:
 MACOS14="macos14"
-MACOS12="macos12" # actually, this isn't supported yet
+MACOS13="macos13" # actually, this isn't supported yet
 UBUNTU20="ubuntu-20.04"
 UBUNTU22="ubuntu-22.04"
 
@@ -62,9 +62,9 @@ supported_platform() {
         Darwin)
             if [ $(uname -m) = "arm64" ]; then
                 echo $MACOS14
-            # This is how we'd support macOS 12. Since this hasn't been tested yet,
+            # This is how we'd support macOS 13. Since this hasn't been tested yet,
             # we withhold official support.
-            # This might bork on something running macOS <12, since we're basing
+            # This might bork on something running macOS <13, since we're basing
             # the it on the hardware, not the specific version.
             elif [ $(uname -m) = "x86_64" ]; then
                 echo ""
@@ -208,7 +208,7 @@ install_solvers() {
         notice "Installing cvc4, cvc5, and/or z3 solvers via direct download"
 
         case $CRYPTOL_PLATFORM in
-            $MACOS12) solvers_version=$WHAT4_SOLVERS_MACOS_12;;
+            $MACOS13) solvers_version=$WHAT4_SOLVERS_MACOS_13;;
             $MACOS14) solvers_version=$WHAT4_SOLVERS_MACOS_14;;
             $UBUNTU20) solvers_version=$WHAT4_SOLVERS_UBUNTU_20;;
             $UBUNTU22) solvers_version=$WHAT4_SOLVERS_UBUNTU_22;;
@@ -278,7 +278,7 @@ check_version() {
 # be available on the user's path. This is particularly needed for GMP.
 put_brew_packages_in_path() {
     if $USED_BREW; then
-        # `brew --prefix` is different on macOS 12 and macOS 14
+        # `brew --prefix` is different on macOS 13 and macOS 14
         echo "export CPATH=$(brew --prefix)/include" >> $VAR_FILE
         echo "export LIBRARY_PATH=$(brew --prefix)/lib" >> $VAR_FILE
     fi