Install gosh to /usr/bin

This makes `muslstack` the primary source of truth.

.github/workflows/stack-size.yml

@@ -5,8 +5,6 @@ on:
     paths:
       - "orchestration/increase_default_stack_size.sh"
   pull_request:
-    paths:
-      - "orchestration/increase_default_stack_size.sh"
   workflow_dispatch:
   # Also run weekly to ensure this doesn't inadvertently decay
   schedule:
@@ -16,22 +14,68 @@ jobs:
   stack_size:
     strategy:
       matrix:
-        os: [ubuntu-latest, ubuntu-24.04, ubuntu-22.04]
+        os: [ubuntu-latest, ubuntu-24.04, ubuntu-22.04, macos-15-intel, macos-latest]
     runs-on: ${{ matrix.os }}
-
     steps:
       - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # 6.0.0
 
-      - name: Download Monero
-        uses: ./.github/actions/monero
+      - name: Install Go
+        uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c # 6.1.0
+        with:
+          go-version: stable
+
+      - name: Monero Daemon Cache
+        id: cache-monerod
+        uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # 4.2.4
+        with:
+          path: monerod
+          key: stack-size-monerod
+
+      - name: Download the Monero Daemon
+        if: steps.cache-monerod.outputs.cache-hit != 'true'
+        run: |
+          # We explicitly download the Linux binary as this script executes over an ELF binary
+          wget https://downloads.getmonero.org/cli/monero-linux-x64-v0.18.4.4.tar.bz2
+          tar -xvf monero-linux-x64-v0.18.4.4.tar.bz2
+          mv $(find . -name monerod) .
 
       - name: Verify expected behavior
         shell: bash
         run: |
-          cp /usr/bin/monerod monerod
-
           STACK=$((8 * 1024 * 1024))
 
+          OS=${{ runner.os }}
+          if [ "$OS" = "Linux" ]; then
+            sudo apt update -y
+            sudo apt install -y ksh bash dash zsh busybox posh mksh yash
+            sudo ln -s "$(which busybox)" /usr/bin/ash
+            sudo ln -s "$(which busybox)" /usr/bin/hush
+            wget http://ftp.us.debian.org/debian/pool/main/g/gash/gash_0.3.1-1_amd64.deb
+            sudo apt install ./gash_0.3.1-1_amd64.deb
+            SHELLS="sh ksh bash dash zsh ash hush posh mksh lksh gash yash"
+          fi
+          # macOS has the benefit of packaging `oksh`, `osh`, and having distinct core tools
+          if [ "$OS" = "macOS" ]; then
+            brew install ksh93 bash dash-shell zsh mksh oksh yash oils-for-unix
+            SHELLS="sh ksh bash dash zsh mksh oksh yash osh"
+          fi
+
+          # Install shells available via `cargo`
+          cargo install brush-shell
+          SHELLS="$SHELLS brush"
+
+          # Install shells available via `go`
+          GOBIN=$(pwd) go install github.com/u-root/u-root/cmds/core/gosh@latest
+          mv ./gosh /usr/bin
+          SHELLS="$SHELLS gosh"
+
+          # Patch with `muslstack`
+          cp monerod monerod-muslstack
+          GOBIN=$(pwd) go install github.com/yaegashi/muslstack@d19cc5866abce3ca59dfc1666df7cc97097d0933
+          ./muslstack -s "$STACK" ./monerod-muslstack
+
+          # Patch with `chelf`, which only works on a Linux host
+          if [ "$OS" = "Linux" ]; then
             cp monerod monerod-chelf
             git clone https://github.com/Gottox/chelf
             cd chelf
@@ -39,35 +83,31 @@ jobs:
             make
             ./chelf -s "$STACK" ../monerod-chelf
             cd ..
+          fi
 
-          cp monerod monerod-muslstack
-          GOBIN=$(pwd) go install github.com/yaegashi/muslstack@d19cc5866abce3ca59dfc1666df7cc97097d0933
-          ./muslstack -s "$STACK" ./monerod-muslstack
-
-          sudo apt update -y
-          sudo apt install -y ksh bash dash zsh busybox mksh posh gash yash
-          sudo ln -s "$(which busybox)" /usr/bin/ash
-          sudo ln -s "$(which busybox)" /usr/bin/hush
-          cargo install brush-shell
-          for shell in sh ksh bash dash zsh ash hush mksh lksh posh gash yash brush; do
+          # Run our script with all installed shells
+          for shell in $SHELLS; do
+            echo "Executing $shell"
             cp monerod monerod-idss-$shell
             ln -s "$(which $shell)" sh
             ./sh ./orchestration/increase_default_stack_size.sh monerod-idss-$shell
             rm ./sh
           done
 
+          # Verify they all had the same result
           sha256() {
             sha256sum "$1" | cut -d' ' -f1
           }
-          CHELF=$(sha256 monerod-chelf)
-          find . -iname "monerod-*" | while read -r bin; do
+          CHELF=$(sha256 monerod-muslstack)
+          find . -name "monerod-*" | while read -r bin; do
             BIN=$(sha256 "$bin")
             if [ ! "$CHELF" = "$BIN" ]; then
-              echo "Different artifact between monerod-chelf ($CHELF) and $bin ($BIN)"
+              echo "Different artifact between monerod-muslstack ($CHELF) and $bin ($BIN)"
               exit 1
             fi
           done
 
+          # Verify the integrity of the result
           read_stack() {
             STACK_INFO=$(readelf "$1" -l | grep STACK -A1)
             MEMSZ=$(printf "%s\n" "$STACK_INFO" | tail -n1 | sed -E s/^[[:space:]]*//g | cut -f2 -d' ')
@@ -79,14 +119,14 @@ jobs:
             exit 2
           fi
 
-          UPDATED_STACK=$(read_stack monerod-chelf)
+          UPDATED_STACK=$(read_stack monerod-muslstack)
           if [ "$UPDATED_STACK" -ne "$STACK" ]; then
             echo "Updated \`PT_GNU_STACK\` ($UPDATED_STACK) wasn't 8 MB ($STACK)"
             exit 3
           fi
 
           # Only one byte should be different due to the bit pattern of 8 MB
-          BYTES_DIFFERENT=$(cmp -l monerod monerod-chelf | wc -l || true)
+          BYTES_DIFFERENT=$(cmp -l monerod monerod-muslstack | wc -l || true)
           if [ "$BYTES_DIFFERENT" -ne 1 ]; then
             echo "More than one byte was different between the two binaries"
             exit 4