Separate platform-specific installers

install

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+#! /bin/bash
+
+zomp_dir="$HOME"/zomp
+bin="$HOME"/bin
+
+cd "$(dirname $(realpath $0))"
+chmod +x uninstall
+
+if [ -d "$zomp_dir" ]
+  then
+    echo "Installation directory $zomp_dir already exists. Aborting."
+    exit 17
+fi
+
+if [ ! -d "$bin" ]
+  then
+    echo "$bin does not exist. Creating it."
+    mkdir "$bin"
+fi
+
+if [[ ":$PATH:" == *":$bin:"* ]]
+  then
+    echo "$bin was found in \$PATH. Good to go."
+  else
+    echo "$bin was not found in \$PATH. Adding it."
+    export PATH="$bin:$PATH"
+fi
+
+for rc in "$HOME/.profile" "$HOME/.bashrc" "$HOME/.bash_profile"
+  do
+    if grep -q "PATH=\"\$HOME/bin:\$PATH\"" "$rc"
+      then
+        echo "Path adjustment found in $rc."
+      else
+        echo "Path adjustment not found in $rc. Adding it."
+        echo "export PATH=\"\$HOME/bin:\$PATH\"" >> "$rc"
+    fi
+  done
+
+cp -r zomp "$zomp_dir"
+cp unix/zx "$zomp_dir"
+cp unix/zxh "$zomp_dir"
+cp README.md "$zomp_dir"
+cp LICENSE "$zomp_dir"
+cp uninstall "$zomp_dir"
+ln -s "$zomp_dir"/zx "$bin"/zx
+ln -s "$zomp_dir"/zxh "$bin"/zxh
+
+if zx_link=$(command -v zx)
+  then
+    echo "zx found at $zx_link. Checking for upgrade."
+    echo "Running \`zx upgrade\`..."
+    zx upgrade
+  else
+    echo "zx is not yet in \$PATH."
+    echo "Add zx's location ($HOME/bin) to \$PATH run \`zx upgrade\`."
+fi