diff --git a/bin/setup-neomutt b/bin/setup-neomutt
--- a/bin/setup-neomutt
+++ b/bin/setup-neomutt
@@ -16,18 +16,24 @@ fi
 
 cd sandbox/neomutt
 
-case "${OSTYPE:-}" in
+PLATFORM="$(uname -o)"
+HCACHE="tokyocabinet"
+
+case "$PLATFORM" in
   darwin*)
     # Use macports' headers
     OPENSSL_PREFIX=/opt/local
     ;;
+  Cygwin)
+    HCACHE=lmdb
+    ;;
 esac
 
 ./prepare -q \
  --with-mailpath=/var/spool/mail \
  --with-ssl${OPENSSL_PREFIX:+=$OPENSSL_PREFIX} \
  --with-sasl \
- --with-tokyocabinet \
+ --with-${HCACHE} \
  --enable-gpgme \
  --enable-imap --enable-smtp \
 
@@ -55,4 +61,12 @@ neomutt build.
   apt install autoconf links pandoc gnupg2 gpgsm urlscan libncursesw5-dev \
     libssl-dev libsasl2-dev libtokyocabinet-dev libgpgme11-dev
 
+=head2 Cygwin / Babun
+
+ pact install autoconf links libncursesw-devel openssl-devel libsasl2-devel \
+   liblmdb-devel libgpgme-devel
+
+gpg2 isn't available in cygwin, but there is a windows build.  using it with
+cygwin paths requires a wrapper though.
+
 =cut