Use conda + Update initial setup docs

scripts/init-submodules-no-riscv-tools-nolog.sh

@@ -76,7 +76,6 @@ cd "$CHIPYARD_DIR"
 
 (
     # Blocklist of submodules to initially skip:
-    # - Toolchain submodules
     # - Generators with huge submodules (e.g., linux sources)
     # - FireSim until explicitly requested
     # - Hammer tool plugins
@@ -84,9 +83,6 @@ cd "$CHIPYARD_DIR"
         # Call the given subcommand (shell function) on each submodule
         # path to temporarily exclude during the recursive update
         for name in \
-            toolchains/*-tools/*/ \
-            toolchains/libgloss \
-            toolchains/qemu \
             generators/sha3 \
             generators/gemmini \
             sims/firesim \
@@ -136,7 +132,12 @@ if [ ! -f ./software/firemarshal/marshal-config.yaml ]; then
   echo "firesim-dir: '../../sims/firesim/'" > ./software/firemarshal/marshal-config.yaml
 fi
 
-echo "# line auto-generated by init-submodules-no-riscv-tools.sh" >> env.sh
-echo '__DIR="$(dirname "$(readlink -f "${BASH_SOURCE[0]:-${(%):-%x}}")")"' >> env.sh
-echo "PATH=\$__DIR/bin:\$PATH" >> env.sh
-echo "PATH=\$__DIR/software/firemarshal:\$PATH" >> env.sh
+cat << EOT >> env.sh
+# line auto-generated by init-submodules-no-riscv-tools.sh
+__DIR="$(dirname "$(readlink -f "${BASH_SOURCE[0]:-${(%):-%x}}")")"
+PATH=\$__DIR/bin:\$PATH
+PATH=\$__DIR/software/firemarshal:\$PATH
+if [ -z \${CONDA_DEFAULT_ENV+x} ]; then
+    echo "WARNING: No conda environment detected. Did you activate the conda environment (e.x. 'conda activate chipyard')?"
+fi
+EOT