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diff --git a/watchexec/install.sh b/watchexec/install.sh
new file mode 100644
index 0000000..b4b92d3
--- /dev/null
+++ b/watchexec/install.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+{
+    set -e
+    set -u
+
+    #####################
+    # Install watchexec #
+    #####################
+
+    # Every package should define these 6 variables
+    pkg_cmd_name="watchexec"
+
+    pkg_dst_cmd="$HOME/.local/bin/watchexec"
+    pkg_dst="$pkg_dst_cmd"
+
+    pkg_src_cmd="$HOME/.local/opt/watchexec-v$WEBI_VERSION/bin/watchexec"
+    pkg_src_dir="$HOME/.local/opt/watchexec-v$WEBI_VERSION"
+    pkg_src="$pkg_src_cmd"
+
+    # pkg_install must be defined by every package
+    pkg_install() {
+        # ~/.local/opt/watchexec-v0.99.9/bin
+        mkdir -p "$(dirname $pkg_src_cmd)"
+
+        # mv ./watchexec-*/watchexec ~/.local/opt/watchexec-v0.99.9/bin/watchexec
+        mv ./watchexec-*/watchexec "$pkg_src_cmd"
+    }
+
+    # pkg_get_current_version is recommended, but (soon) not required
+    pkg_get_current_version() {
+        # 'watchexec --version' has output in this format:
+        #       watchexec 0.99.9 (rev abcdef0123)
+        # This trims it down to just the version number:
+        #       0.99.9
+        echo $(watchexec --version 2>/dev/null | head -n 1 | cut -d ' ' -f 2)
+    }
+
+}