diff --git a/Makefile b/Makefile
index 38635582..e782b5a4 100644
--- a/Makefile
+++ b/Makefile
@@ -270,7 +270,8 @@ install: all
 	$(INSTALL) -m0755 chibi-scheme$(EXE) $(DESTDIR)$(BINDIR)/
 	$(INSTALL) -m0755 tools/chibi-ffi $(DESTDIR)$(BINDIR)/
 	$(INSTALL) -m0755 tools/chibi-doc $(DESTDIR)$(BINDIR)/
-	$(MKDIR) $(DESTDIR)$(MODDIR)/chibi/char-set $(DESTDIR)$(MODDIR)/chibi/crypto $(DESTDIR)$(MODDIR)/chibi/io $(DESTDIR)$(MODDIR)/chibi/iset $(DESTDIR)$(MODDIR)/chibi/loop $(DESTDIR)$(MODDIR)/chibi/match $(DESTDIR)$(MODDIR)/chibi/math $(DESTDIR)$(MODDIR)/chibi/monad $(DESTDIR)$(MODDIR)/chibi/net $(DESTDIR)$(MODDIR)/chibi/optimize $(DESTDIR)$(MODDIR)/chibi/parse $(DESTDIR)$(MODDIR)/chibi/show $(DESTDIR)$(MODDIR)/chibi/term
+	$(INSTALL) -m0755 tools/snow-chibi $(DESTDIR)$(BINDIR)/
+	$(MKDIR) $(DESTDIR)$(MODDIR)/chibi/char-set $(DESTDIR)$(MODDIR)/chibi/crypto $(DESTDIR)$(MODDIR)/chibi/io $(DESTDIR)$(MODDIR)/chibi/iset $(DESTDIR)$(MODDIR)/chibi/loop $(DESTDIR)$(MODDIR)/chibi/match $(DESTDIR)$(MODDIR)/chibi/math $(DESTDIR)$(MODDIR)/chibi/monad $(DESTDIR)$(MODDIR)/chibi/net $(DESTDIR)$(MODDIR)/chibi/optimize $(DESTDIR)$(MODDIR)/chibi/parse $(DESTDIR)$(MODDIR)/chibi/show $(DESTDIR)$(MODDIR)/chibi/snow $(DESTDIR)$(MODDIR)/chibi/term
 	$(MKDIR) $(DESTDIR)$(MODDIR)/scheme/char
 	$(MKDIR) $(DESTDIR)$(MODDIR)/scheme/time
 	$(MKDIR) $(DESTDIR)$(MODDIR)/srfi/1 $(DESTDIR)$(MODDIR)/srfi/18 $(DESTDIR)$(MODDIR)/srfi/27 $(DESTDIR)$(MODDIR)/srfi/33 $(DESTDIR)$(MODDIR)/srfi/39 $(DESTDIR)$(MODDIR)/srfi/69 $(DESTDIR)$(MODDIR)/srfi/95 $(DESTDIR)$(MODDIR)/srfi/99 $(DESTDIR)$(MODDIR)/srfi/99/records
@@ -288,6 +289,7 @@ install: all
 	$(INSTALL) -m0644 lib/chibi/optimize/*.sld lib/chibi/optimize/*.scm $(DESTDIR)$(MODDIR)/chibi/optimize/
 	$(INSTALL) -m0644 lib/chibi/parse/*.sld lib/chibi/parse/*.scm $(DESTDIR)$(MODDIR)/chibi/parse/
 	$(INSTALL) -m0644 lib/chibi/show/*.sld lib/chibi/show/*.scm $(DESTDIR)$(MODDIR)/chibi/show/
+	$(INSTALL) -m0644 lib/chibi/snow/*.sld lib/chibi/snow/*.scm $(DESTDIR)$(MODDIR)/chibi/snow/
 	$(INSTALL) -m0644 lib/chibi/term/*.sld lib/chibi/term/*.scm $(DESTDIR)$(MODDIR)/chibi/term/
 	$(INSTALL) -m0644 lib/scheme/*.sld lib/scheme/*.scm $(DESTDIR)$(MODDIR)/scheme/
 	$(INSTALL) -m0644 lib/scheme/char/*.sld lib/scheme/char/*.scm $(DESTDIR)$(MODDIR)/scheme/char/
@@ -338,6 +340,7 @@ uninstall:
 	-$(RM) $(DESTDIR)$(BINDIR)/chibi-scheme-static$(EXE)
 	-$(RM) $(DESTDIR)$(BINDIR)/chibi-ffi
 	-$(RM) $(DESTDIR)$(BINDIR)/chibi-doc
+	-$(RM) $(DESTDIR)$(BINDIR)/snow-chibi
 	-$(RM) $(DESTDIR)$(SOLIBDIR)/libchibi-scheme$(SO)
 	-$(RM) $(DESTDIR)$(SOLIBDIR)/libchibi-scheme$(SO).$(SOVERSION)
 	-$(RM) $(DESTDIR)$(SOLIBDIR)/libchibi-scheme$(SO).$(SOVERSION_MAJOR)
diff --git a/lib/snow/commands.scm b/lib/chibi/snow/commands.scm
similarity index 100%
rename from lib/snow/commands.scm
rename to lib/chibi/snow/commands.scm
diff --git a/lib/snow/commands.sld b/lib/chibi/snow/commands.sld
similarity index 56%
rename from lib/snow/commands.sld
rename to lib/chibi/snow/commands.sld
index b4d07d1f..6496a3eb 100644
--- a/lib/snow/commands.sld
+++ b/lib/chibi/snow/commands.sld
@@ -1,35 +1,31 @@
 
-(define-library (snow commands)
-  (export
-   command/package
-   command/gen-key
-   command/reg-key
-   command/sign
-   command/verify
-   command/upload
-   command/install
-   command/remove
-   command/search
-   command/show
-   command/status
-   command/update
-   command/upgrade
-   die
-   installed-libraries)
-  (import (except (chibi) equal? write display)
-          (scheme base)
+(define-library (chibi snow commands)
+  (export command/package
+          command/gen-key
+          command/reg-key
+          command/sign
+          command/verify
+          command/upload
+          command/install
+          command/remove
+          command/search
+          command/show
+          command/status
+          command/update
+          command/upgrade)
+  (import (scheme base)
           (scheme eval)
-          (scheme write)
           (scheme file)
+          (scheme process-context)
           (scheme time)
+          (scheme write)
           (srfi 1)
           (srfi 27)
           (srfi 33)
           (srfi 95)
-          (srfi 98)
-          (snow interface)
-          (snow package)
-          (snow utils)
+          (chibi snow interface)
+          (chibi snow package)
+          (chibi snow utils)
           (chibi bytevector)
           (chibi config)
           (chibi crypto md5)
diff --git a/lib/snow/interface.scm b/lib/chibi/snow/interface.scm
similarity index 100%
rename from lib/snow/interface.scm
rename to lib/chibi/snow/interface.scm
diff --git a/lib/snow/interface.sld b/lib/chibi/snow/interface.sld
similarity index 89%
rename from lib/snow/interface.sld
rename to lib/chibi/snow/interface.sld
index a64128fb..23d6819d 100644
--- a/lib/snow/interface.sld
+++ b/lib/chibi/snow/interface.sld
@@ -1,5 +1,5 @@
 
-(define-library (snow interface)
+(define-library (chibi snow interface)
   (export warn info message die input input-number yes-or-no?
           restore-history save-history)
   (import (scheme base) (scheme char) (scheme read) (scheme write)
diff --git a/lib/snow/package.scm b/lib/chibi/snow/package.scm
similarity index 100%
rename from lib/snow/package.scm
rename to lib/chibi/snow/package.scm
diff --git a/lib/snow/package.sld b/lib/chibi/snow/package.sld
similarity index 93%
rename from lib/snow/package.sld
rename to lib/chibi/snow/package.sld
index 0921273d..4ec95bca 100644
--- a/lib/snow/package.sld
+++ b/lib/chibi/snow/package.sld
@@ -1,5 +1,5 @@
 
-(define-library (snow package)
+(define-library (chibi snow package)
   (export package? library?
           package-name package-email package-url package-version
           package-libraries package-provides? package-dependencies
@@ -16,7 +16,7 @@
           extract-rsa-private-key extract-rsa-public-key)
   (import (chibi)
           (srfi 1)
-          (snow interface)
+          (chibi snow interface)
           (chibi config)
           (chibi crypto md5)
           (chibi crypto rsa)
diff --git a/lib/snow/utils.scm b/lib/chibi/snow/utils.scm
similarity index 72%
rename from lib/snow/utils.scm
rename to lib/chibi/snow/utils.scm
index 8f53c31b..c0d2edc3 100644
--- a/lib/snow/utils.scm
+++ b/lib/chibi/snow/utils.scm
@@ -1,17 +1,13 @@
 
-(define (file-sha256 file)
-  ;; openssl dgst -sha256 file
-  (let ((ls (string-split (process->string `("shasum" "-a" "256" ,file)))))
-    (and (pair? ls) (car ls))))
+;;> Copies the file \var{from} to \var{to}.
 
-(define (copy-file src dst)
-  (system "cp" src dst))
-
-(define (move-file src dst)
-  (system "mv" src dst))
-
-;; TODO: check if the upstream has been modified
-(define http-get-to-file/cached http-get-to-file)
+(define (copy-file from to)
+  (let ((in (open-binary-input-file from))
+        (out (open-binary-output-file to)))
+    (let lp ()
+      (let ((n (read-u8 in)))
+        (cond ((eof-object? n) (close-input-port in) (close-output-port out))
+              (else (write-u8 n out) (lp)))))))
 
 (define (call-with-temp-file template proc)
   (let ((base (string-append
@@ -53,15 +49,5 @@
           (lp (+ i 1)))
          ((create-directory path #o700)
           (let ((res (proc path)))
-            ;;(delete-file-hierarchy path)
+            (delete-file-hierarchy path)
             res)))))))
-
-(define (system-from-dir dir . cmd)
-  ;; alternately fork+cd+exec, or run a subshell with cd
-  (with-directory dir (lambda () (apply system cmd))))
-
-(define (gzip-file src)
-  (system "gzip" "-c" src))
-
-(define (gunzip-file src)
-  (system "gzip" "-d" "-c" src))
diff --git a/lib/chibi/snow/utils.sld b/lib/chibi/snow/utils.sld
new file mode 100644
index 00000000..d0d1a262
--- /dev/null
+++ b/lib/chibi/snow/utils.sld
@@ -0,0 +1,12 @@
+
+(define-library (chibi snow utils)
+  (export copy-file call-with-temp-file call-with-temp-dir)
+  (import (scheme base)
+          (scheme file)
+          (scheme time)
+          (srfi 33)
+          (chibi filesystem)
+          (chibi pathname)
+          (chibi process)
+          (chibi snow interface))
+  (include "utils.scm"))
diff --git a/lib/snow/utils.sld b/lib/snow/utils.sld
deleted file mode 100644
index 5f52f0b3..00000000
--- a/lib/snow/utils.sld
+++ /dev/null
@@ -1,12 +0,0 @@
-
-(define-library (snow utils)
-  (export copy-file move-file http-get-to-file/cached
-          call-with-temp-file call-with-temp-dir create-directory*
-          path-strip-leading-parents
-          file-sha256)
-  (import (scheme base) (scheme char) (scheme write) (scheme time)
-          (snow interface)
-          (srfi 1) (srfi 33)
-          (chibi string) (chibi pathname) (chibi uri)
-          (chibi filesystem) (chibi process) (chibi net http))
-  (include "utils.scm"))
diff --git a/lib/snow/snow b/tools/snow-chibi
similarity index 94%
rename from lib/snow/snow
rename to tools/snow-chibi
index a847ac9d..4b63db04 100755
--- a/lib/snow/snow
+++ b/tools/snow-chibi
@@ -3,11 +3,14 @@
 ;; This code was written by Alex Shinn in 2013 and placed in the
 ;; Public Domain.  All warranties are disclaimed.
 
-(import (scheme base) (scheme char) (scheme read) (scheme write)
-        (scheme file) (scheme process-context) (srfi 1)
-        (snow commands) (snow library) (snow utils) (snow interface)
-        (chibi app) (chibi config) (chibi match) (chibi string)
-        (chibi pathname) (chibi filesystem) (chibi process))
+(import (scheme base)
+        (scheme process-context)
+        (chibi snow commands)
+        (chibi snow interface)
+        (chibi app)
+        (chibi config)
+        (chibi pathname)
+        (chibi process))
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;