diff --git a/feature-csv/babashka/impl/csv.clj b/feature-csv/babashka/impl/csv.clj
index 850444e6..040a407c 100644
--- a/feature-csv/babashka/impl/csv.clj
+++ b/feature-csv/babashka/impl/csv.clj
@@ -1,7 +1,10 @@
 (ns babashka.impl.csv
   {:no-doc true}
-  (:require [clojure.data.csv :as csv]))
+  (:require [clojure.data.csv :as csv]
+            [sci.core :as sci]))
+
+(def cns (sci/create-ns 'clojure.data.csv nil))
 
 (def csv-namespace
-  {'read-csv csv/read-csv
-   'write-csv csv/write-csv})
+  {'read-csv (sci/copy-var csv/read-csv cns)
+   'write-csv (sci/copy-var csv/write-csv cns)})
diff --git a/sci b/sci
index 5ed2190f..3c7ebc9a 160000
--- a/sci
+++ b/sci
@@ -1 +1 @@
-Subproject commit 5ed2190f3c97de6d30f3aba96362bf6c68e95e90
+Subproject commit 3c7ebc9adc31261e342145696438022e8a9b9fce
diff --git a/src/babashka/impl/clojure/java/browse.clj b/src/babashka/impl/clojure/java/browse.clj
index c2ee05a1..37db104b 100644
--- a/src/babashka/impl/clojure/java/browse.clj
+++ b/src/babashka/impl/clojure/java/browse.clj
@@ -4,7 +4,9 @@
             [clojure.string :as str]
             [sci.core :as sci]))
 
-(def open-url-script (sci/new-dynamic-var '*open-url-script* (atom nil)))
+(def bns (sci/create-ns 'clojure.java.browse nil))
+
+(def open-url-script (sci/new-dynamic-var '*open-url-script* (atom nil) {:ns bns}))
 
 (def os
   (let [os-name (System/getProperty "os.name")
@@ -27,4 +29,4 @@
 
 (def browse-namespace
   {'*open-url-script* open-url-script
-   'browse-url        browse-url})
+   'browse-url        (sci/copy-var browse-url bns)})
diff --git a/src/babashka/impl/clojure/java/shell.clj b/src/babashka/impl/clojure/java/shell.clj
index 0251ff8b..4c11d2d9 100644
--- a/src/babashka/impl/clojure/java/shell.clj
+++ b/src/babashka/impl/clojure/java/shell.clj
@@ -1,20 +1,13 @@
 (ns babashka.impl.clojure.java.shell
   {:no-doc true}
   (:require [clojure.java.shell :as shell]
-            [sci.core :as sci]
-            [sci.impl.namespaces :refer [copy-var]]
-            [sci.impl.vars :as vars]))
+            [sci.core :as sci]))
 
-(def shell-ns (vars/->SciNamespace 'clojure.java.shell nil))
+(def shell-ns (sci/create-ns 'clojure.java.shell nil))
 
 (def sh-dir (sci/new-dynamic-var '*sh-dir* nil {:ns shell-ns}))
 (def sh-env (sci/new-dynamic-var '*sh-env* nil {:ns shell-ns}))
 
-(defn with-sh-dir*
-  [_ _ dir & forms]
-  `(binding [clojure.java.shell/*sh-dir* ~dir]
-     ~@forms))
-
 (defn with-sh-env*
   [_ _ env & forms]
   `(binding [clojure.java.shell/*sh-env* ~env]
@@ -38,11 +31,11 @@
 
 (alter-meta! #'sh (constantly (meta #'shell/sh)))
 
+(def sns (sci/create-ns 'clojure.java.shell nil))
+
 (def shell-namespace
   {'*sh-dir* sh-dir
    '*sh-env* sh-env
-   'with-sh-dir (with-meta with-sh-dir*
-                  {:sci/macro true})
-   'with-sh-env (with-meta with-sh-env*
-                  {:sci/macro true})
-   'sh (copy-var sh shell-ns)})
+   'with-sh-dir (sci/copy-var shell/with-sh-dir shell-ns)
+   'with-sh-env (sci/copy-var shell/with-sh-env shell-ns)
+   'sh (sci/copy-var sh shell-ns)})
diff --git a/src/babashka/impl/clojure/stacktrace.clj b/src/babashka/impl/clojure/stacktrace.clj
index 07f19ef1..f6d5c06a 100644
--- a/src/babashka/impl/clojure/stacktrace.clj
+++ b/src/babashka/impl/clojure/stacktrace.clj
@@ -3,14 +3,19 @@
   (:require [clojure.stacktrace :as stacktrace]
             [sci.core :as sci]))
 
+(def sns (sci/create-ns 'clojure.stacktrace nil))
+
 (defmacro wrap-out [f]
   `(fn [& ~'args]
      (binding [*out* @sci/out]
        (apply ~f ~'args))))
 
+(defn new-var [var-sym f]
+  (sci/new-var var-sym f {:ns sns}))
+
 (def stacktrace-namespace
-  {'root-cause stacktrace/root-cause
-   'print-trace-element (wrap-out stacktrace/print-trace-element)
-   'print-throwable (wrap-out stacktrace/print-throwable)
-   'print-stack-trace (wrap-out stacktrace/print-stack-trace)
-   'print-cause-trace (wrap-out stacktrace/print-cause-trace)})
+  {'root-cause (sci/copy-var stacktrace/root-cause sns)
+   'print-trace-element (new-var 'print-trace-element (wrap-out stacktrace/print-trace-element))
+   'print-throwable (new-var 'print-throwable (wrap-out stacktrace/print-throwable))
+   'print-stack-trace (new-var 'print-stack-trace (wrap-out stacktrace/print-stack-trace))
+   'print-cause-trace (new-var 'print-cause-trace (wrap-out stacktrace/print-cause-trace))})
diff --git a/src/babashka/impl/protocols.clj b/src/babashka/impl/protocols.clj
index 67d7cd51..f5ef9325 100644
--- a/src/babashka/impl/protocols.clj
+++ b/src/babashka/impl/protocols.clj
@@ -31,8 +31,8 @@
 
 (def protocols-namespace
   {'Datafiable (sci/new-var 'clojure.core.protocols/Datafiable {:methods #{'datafy}
-                                                                :ns protocols-ns})
+                                                                :ns protocols-ns} {:ns protocols-ns})
    'datafy (copy-var datafy protocols-ns)
    'Navigable (sci/new-var 'clojure.core.protocols/Navigable {:methods #{'nav}
-                                                              :ns protocols-ns})
+                                                              :ns protocols-ns} {:ns protocols-ns})
    'nav (copy-var nav protocols-ns)})
diff --git a/src/babashka/impl/server.clj b/src/babashka/impl/server.clj
index 4b44ca73..687056a4 100644
--- a/src/babashka/impl/server.clj
+++ b/src/babashka/impl/server.clj
@@ -1,2 +1,24 @@
-(ns babashka.impl.server)
+(ns babashka.impl.server
+  (:require [babashka.impl.clojure.core.server :as server]
+            [babashka.impl.common :as common]
+            [babashka.impl.socket-repl :as socket-repl]
+            [sci.core :as sci]))
 
+(def sns (sci/create-ns 'clojure.core.server nil))
+
+(def prepl (fn [& args]
+             (apply server/prepl @common/ctx args)))
+
+(def io-prepl
+  (fn [& args]
+    (apply server/io-prepl @common/ctx args)))
+
+(def start-server
+  (fn [& args]
+    (apply server/start-server @common/ctx args)))
+
+(def clojure-core-server-namespace
+  {'repl (sci/copy-var socket-repl/repl sns)
+   'prepl (sci/copy-var prepl sns)
+   'io-prepl (sci/copy-var io-prepl sns)
+   'start-server (sci/copy-var start-server sns)})
diff --git a/src/babashka/impl/test.clj b/src/babashka/impl/test.clj
index 0d6dfbc3..6e618efe 100644
--- a/src/babashka/impl/test.clj
+++ b/src/babashka/impl/test.clj
@@ -9,6 +9,9 @@
 
 (def tns t/tns)
 
+(defn new-var [var-sym f]
+  (sci/new-var var-sym f {:ns tns}))
+
 (def clojure-test-namespace
   {:obj tns
    '*load-tests* t/load-tests
@@ -20,17 +23,17 @@
    '*test-out* t/test-out
    ;; 'with-test-out (macrofy @#'t/with-test-out)
    ;; 'file-position t/file-position
-   'testing-vars-str t/testing-vars-str
-   'testing-contexts-str t/testing-contexts-str
-   'inc-report-counter t/inc-report-counter
+   'testing-vars-str (sci/copy-var t/testing-vars-str tns)
+   'testing-contexts-str (sci/copy-var t/testing-contexts-str tns)
+   'inc-report-counter (sci/copy-var t/inc-report-counter tns)
    'report t/report
-   'do-report t/do-report
+   'do-report (sci/copy-var t/do-report tns)
    ;; assertion utilities
-   'function? t/function?
-   'assert-predicate t/assert-predicate
-   'assert-any t/assert-any
+   'function? (sci/copy-var t/function? tns)
+   'assert-predicate (sci/copy-var t/assert-predicate tns)
+   'assert-any (sci/copy-var t/assert-any tns)
    ;; assertion methods
-   'assert-expr t/assert-expr
+   'assert-expr (sci/copy-var t/assert-expr tns)
    'try-expr (sci/copy-var t/try-expr tns)
    ;; assertion macros
    'is (sci/copy-var t/is tns)
@@ -42,15 +45,15 @@
    'deftest- (sci/copy-var t/deftest- tns)
    'set-test (sci/copy-var t/set-test tns)
    ;; fixtures
-   'use-fixtures t/use-fixtures
-   'compose-fixtures t/compose-fixtures
-   'join-fixtures t/join-fixtures
+   'use-fixtures (sci/copy-var t/use-fixtures tns)
+   'compose-fixtures (sci/copy-var t/compose-fixtures tns)
+   'join-fixtures (sci/copy-var t/join-fixtures tns)
    ;; running tests: low level
    'test-var t/test-var
-   'test-vars t/test-vars
-   'test-all-vars (contextualize t/test-all-vars)
-   'test-ns (contextualize t/test-ns)
+   'test-vars (sci/copy-var t/test-vars tns)
+   'test-all-vars (new-var 'test-all-vars (contextualize t/test-all-vars))
+   'test-ns (new-var 'test-ns (contextualize t/test-ns))
    ;; running tests: high level
-   'run-tests (contextualize t/run-tests)
-   'run-all-tests (contextualize t/run-all-tests)
-   'successful? t/successful?})
+   'run-tests (new-var 'run-tests (contextualize t/run-tests))
+   'run-all-tests (new-var 'run-all-tests (contextualize t/run-all-tests))
+   'successful? (sci/copy-var t/successful? tns)})
diff --git a/src/babashka/main.clj b/src/babashka/main.clj
index 8eccc94a..d626e949 100644
--- a/src/babashka/main.clj
+++ b/src/babashka/main.clj
@@ -9,7 +9,6 @@
    [babashka.impl.classes :as classes]
    [babashka.impl.classpath :as cp :refer [classpath-namespace]]
    [babashka.impl.clojure.core :as core :refer [core-extras]]
-   [babashka.impl.clojure.core.server :as server]
    [babashka.impl.clojure.java.browse :refer [browse-namespace]]
    [babashka.impl.clojure.java.io :refer [io-namespace]]
    [babashka.impl.clojure.java.shell :refer [shell-namespace]]
@@ -34,12 +33,13 @@
    [babashka.impl.proxy :refer [proxy-fn]]
    [babashka.impl.reify :refer [reify-fn]]
    [babashka.impl.repl :as repl]
+   [babashka.impl.server :refer [clojure-core-server-namespace]]
    [babashka.impl.socket-repl :as socket-repl]
    [babashka.impl.tasks :as tasks :refer [tasks-namespace]]
    [babashka.impl.test :as t]
    [babashka.impl.tools.cli :refer [tools-cli-namespace]]
    [babashka.nrepl.server :as nrepl-server]
-   [babashka.wait :as wait]
+   [babashka.wait :refer [wait-namespace]]
    [clojure.edn :as edn]
    [clojure.java.io :as io]
    [clojure.string :as str]
@@ -72,6 +72,8 @@
     (def pipe-signal-received? (constantly false))
     (def handle-sigint! (constantly nil))))
 
+(def signal-ns {'pipe-signal-received? (sci/copy-var pipe-signal-received? (sci/create-ns 'babashka.signal nil))})
+
 (sci/alter-var-root sci/in (constantly *in*))
 (sci/alter-var-root sci/out (constantly *out*))
 (sci/alter-var-root sci/err (constantly *err*))
@@ -311,15 +313,6 @@ Use bb run --help to show this help output.
 
 ;;(def ^:private server-ns-obj (sci/create-ns 'clojure.core.server nil))
 
-(def clojure-core-server
-  {'repl socket-repl/repl
-   'prepl (fn [& args]
-            (apply server/prepl @common/ctx args))
-   'io-prepl (fn [& args]
-               (apply server/io-prepl @common/ctx args))
-   'start-server (fn [& args]
-                   (apply server/start-server @common/ctx args))})
-
 (def input-var (sci/new-dynamic-var '*input*))
 
 (def namespaces
@@ -330,9 +323,8 @@ Use bb run --help to show this help output.
                         nil)}
        'clojure.tools.cli tools-cli-namespace
        'clojure.java.shell shell-namespace
-       'babashka.wait {'wait-for-port wait/wait-for-port
-                       'wait-for-path wait/wait-for-path}
-       'babashka.signal {'pipe-signal-received? pipe-signal-received?}
+       'babashka.wait wait-namespace
+       'babashka.signal signal-ns
        'clojure.java.io io-namespace
        'cheshire.core cheshire-core-namespace
        'clojure.data data/data-namespace
@@ -354,7 +346,7 @@ Use bb run --help to show this help output.
        'clojure.datafy datafy-namespace
        'clojure.core.protocols protocols-namespace
        'babashka.process process-namespace
-       'clojure.core.server clojure-core-server
+       'clojure.core.server clojure-core-server-namespace
        'babashka.deps deps-namespace
        'babashka.tasks tasks-namespace
        'taoensso.timbre timbre-namespace
diff --git a/src/babashka/wait.clj b/src/babashka/wait.clj
index b4ea69b6..5cbea999 100644
--- a/src/babashka/wait.clj
+++ b/src/babashka/wait.clj
@@ -1,5 +1,6 @@
 (ns babashka.wait
-  (:require [clojure.java.io :as io])
+  (:require [clojure.java.io :as io]
+            [sci.core :as sci])
   (:import [java.net Socket SocketException]))
 
 (set! *warn-on-reflection* true)
@@ -56,7 +57,13 @@
                default
                :else
                (assoc opts :took
-                 (- (System/currentTimeMillis) t0))))))))
+                      (- (System/currentTimeMillis) t0))))))))
+
+(def wns (sci/create-ns 'babashka.wait nil))
+
+(def wait-namespace
+  {'wait-for-port (sci/copy-var wait-for-port wns)
+   'wait-for-path (sci/copy-var wait-for-path wns)})
 
 (comment
   (wait-for-port "localhost" 80)
diff --git a/test/babashka/deps_test.clj b/test/babashka/deps_test.clj
index 397a01f9..4b72f4a2 100644
--- a/test/babashka/deps_test.clj
+++ b/test/babashka/deps_test.clj
@@ -113,3 +113,8 @@ true
               (str/replace ":env-key" ":extra-env")))
         (is (fs/exists? libs-dir))
         (is (fs/exists? libs-dir2)))))
+
+(deftest print-deps-test
+  
+
+  )
diff --git a/test/babashka/impl/socket_repl_test.clj b/test/babashka/impl/socket_repl_test.clj
index 8c99f64a..5e6e587c 100644
--- a/test/babashka/impl/socket_repl_test.clj
+++ b/test/babashka/impl/socket_repl_test.clj
@@ -1,8 +1,8 @@
 (ns babashka.impl.socket-repl-test
   (:require
    [babashka.impl.common :as common]
+   [babashka.impl.server :refer [clojure-core-server-namespace]]
    [babashka.impl.socket-repl :refer [start-repl! stop-repl!]]
-   [babashka.main :refer [clojure-core-server]]
    [babashka.process :as p]
    [babashka.test-utils :as tu]
    [babashka.wait :as w]
@@ -46,7 +46,7 @@
   (when exec?
     (try
       (if tu/jvm?
-        (let [ctx (init {:namespaces {'clojure.core.server clojure-core-server}
+        (let [ctx (init {:namespaces {'clojure.core.server clojure-core-server-namespace}
                          :features #{:bb}})]
           (vreset! common/ctx ctx)
           (start-repl! "0.0.0.0:1666" ctx))
@@ -79,7 +79,7 @@
         (let [ctx (init {:bindings {'*command-line-args*
                                     ["a" "b" "c"]}
                          :env (atom {})
-                         :namespaces {'clojure.core.server clojure-core-server}
+                         :namespaces {'clojure.core.server clojure-core-server-namespace}
                          :features #{:bb}})]
           (vreset! common/ctx ctx)
           (start-repl! "{:address \"localhost\" :accept clojure.core.server/repl :port 1666}"
@@ -103,7 +103,7 @@
         (let [ctx (init {:bindings {'*command-line-args*
                                     ["a" "b" "c"]}
                          :env (atom {})
-                         :namespaces {'clojure.core.server clojure-core-server}
+                         :namespaces {'clojure.core.server clojure-core-server-namespace}
                          :features #{:bb}})]
           (vreset! common/ctx ctx)
           (start-repl! "{:address \"localhost\" :accept clojure.core.server/io-prepl :port 1666}"