diff --git a/shell.nix b/shell.nix
index d6bc7b130..701304db9 100644
--- a/shell.nix
+++ b/shell.nix
@@ -36,8 +36,7 @@ let
 
     echo "" > ''${basePath}/.develop.env
 
-    PORT_OFFSET=$(((16#$(whoami | sha256sum | head -c 16)) % 1000))
-    echo "PORT_OFFSET=''${PORT_OFFSET}" >> ''${basePath}/.develop.env
+    export PORT_OFFSET=$(((16#$(whoami | sha256sum | head -c 16)) % 1000))
 
     if [[ -z "$PGHOST" ]]; then
       set -xe
@@ -50,6 +49,9 @@ let
       psql -h ''${pgSockDir} -f ${postgresSchema} postgres
       printf "Postgres logfile is %s\nPostgres socket directory is %s\n" ''${pgLogFile} ''${pgSockDir}
 
+      export PGHOST=''${pgSockDir}
+      export PGLOG=''${pgLogFile}
+
       cleanup_postgres() {
           set +e -x
           pg_ctl stop -D ''${pgDir}
@@ -60,15 +62,15 @@ let
       set +xe
     fi
 
-    echo "PGHOST=''${pgSockDir}" >> ''${basePath}/.develop.env
-    echo "PGLOG=''${pgLogFile}" >> ''${basePath}/.develop.env
-
     if [[ -z "$WIDGET_MEMCACHED_HOST" ]]; then
       set -xe
 
       memcached -l localhost -p $(($PORT_OFFSET + 11211)) &>/dev/null &
       widget_memcached_pid=$!
 
+      export WIDGET_MEMCACHED_HOST=localhost
+      export WIDGET_MEMCACHED_PORT=$(($PORT_OFFSET + 11211))
+
       cleanup_widget_memcached() {
         [[ -n "$widget_memcached_pid" ]] && kill $widget_memcached_pid
       }
@@ -76,17 +78,15 @@ let
       set +xe
     fi
 
-    echo "WIDGET_MEMCACHED_HOST=localhost" >> ''${basePath}/.develop.env
-    echo "WIDGET_MEMCACHED_PORT=$(($PORT_OFFSET + 11211))" >> ''${basePath}/.develop.env
-
-    echo "PGLOG=''${PGLOG}" >> ''${basePath}/.develop.env
-
     if [[ -z "$SESSION_MEMCACHED_HOST" ]]; then
       set -xe
 
       memcached -l localhost -p $(($PORT_OFFSET + 11212)) &>/dev/null &
       session_memcached_pid=$!
 
+      export SESSION_MEMCACHED_HOST=localhost
+      export SESSION_MEMCACHED_PORT=$(($PORT_OFFSET + 11212))
+
       cleanup_session_memcached() {
         [[ -n "$session_memcached_pid" ]] && kill $session_memcached_pid
       }
@@ -94,15 +94,15 @@ let
       set +xe
     fi
 
-    echo "SESSION_MEMCACHED_HOST=localhost" >> ''${basePath}/.develop.env
-    echo "SESSION_MEMCACHED_PORT=$(($PORT_OFFSET + 11212))" >> ''${basePath}/.develop.env
-
     if [[ -z "$MEMCACHED_HOST" ]]; then
       set -xe
 
       memcached -l localhost -p $(($PORT_OFFSET + 11213)) &>/dev/null &
       memcached_pid=$!
 
+      export MEMCACHED_HOST=localhost
+      export MEMCACHED_PORT=$(($PORT_OFFSET + 11212))
+
       cleanup_session_memcached() {
         [[ -n "$memcached_pid" ]] && kill $memcached_pid
       }
@@ -110,9 +110,6 @@ let
       set +xe
     fi
 
-    echo "MEMCACHED_HOST=localhost" >> ''${basePath}/.develop.env
-    echo "MEMCACHED_PORT=$(($PORT_OFFSET + 11212))" >> ''${basePath}/.develop.env
-
     if [[ -z "$UPLOAD_S3_HOST" ]]; then
        set -xe
 
@@ -122,26 +119,52 @@ let
          [[ -n "''${MINIO_LOGFILE}" ]] && rm -rvf ''${MINIO_LOGFILE}
        }
 
-       MINIO_DIR=$(mktemp -d)
-       MINIO_LOGFILE=$(mktemp --tmpdir minio.XXXXXX.log)
-       MINIO_ACCESS_KEY=$(${pkgs.pwgen}/bin/pwgen -s 16 1)
-       MINIO_SECRET_KEY=$(${pkgs.pwgen}/bin/pwgen -s 32 1)
+       export MINIO_DIR=$(mktemp -d)
+       export MINIO_LOGFILE=$(mktemp --tmpdir minio.XXXXXX.log)
+       export MINIO_ACCESS_KEY=$(${pkgs.pwgen}/bin/pwgen -s 16 1)
+       export MINIO_SECRET_KEY=$(${pkgs.pwgen}/bin/pwgen -s 32 1)
 
        minio server --address localhost:$(($PORT_OFFSET + 9000)) ''${MINIO_DIR} &>''${MINIO_LOGFILE} &
        minio_pid=$!
 
+       export UPLOAD_S3_HOST=localhost
+       export UPLOAD_S3_PORT=$(($PORT_OFFSET + 9000))
+       export UPLOAD_S3_SSL=false
+       export UPLOAD_S3_KEY_ID=''${MINIO_ACCESS_KEY}
+       export UPLOAD_S3_KEY=''${MINIO_SECRET_KEY}
+
        sleep 1
 
        set +xe
     fi
 
-    echo "MINIO_DIR=''${MINIO_DIR}" >> ''${basePath}/.develop.env
-    echo "MINIO_LOGFILE=''${MINIO_LOGFILE}" >> ''${basePath}/.develop.env
-    echo "UPLOAD_S3_HOST=localhost" >> ''${basePath}/.develop.env
-    echo "UPLOAD_S3_PORT=$(($PORT_OFFSET + 9000))" >> ''${basePath}/.develop.env
-    echo "UPLOAD_S3_SSL=false" >> ''${basePath}/.develop.env
-    echo "UPLOAD_S3_KEY_ID=''${MINIO_ACCESS_KEY}" >> ''${basePath}/.develop.env
-    echo "UPLOAD_S3_KEY=''${MINIO_SECRET_KEY}" >> ''${basePath}/.develop.env
+    set -xe
+
+    cat >> ''${basePath}/.develop.env <<EOF
+    PORT_OFFSET=''${PORT_OFFSET}
+
+    PGHOST=''${pgSockDir}
+    PGLOG=''${pgLogFile}
+
+    WIDGET_MEMCACHED_HOST=localhost
+    WIDGET_MEMCACHED_PORT=$(($PORT_OFFSET + 11211))
+
+    SESSION_MEMCACHED_HOST=localhost
+    SESSION_MEMCACHED_PORT=$(($PORT_OFFSET + 11212))
+
+    MEMCACHED_HOST=localhost
+    MEMCACHED_PORT=$(($PORT_OFFSET + 11212))
+
+    MINIO_DIR=''${MINIO_DIR}
+    MINIO_LOGFILE=''${MINIO_LOGFILE}
+    UPLOAD_S3_HOST=localhost
+    UPLOAD_S3_PORT=$(($PORT_OFFSET + 9000))
+    UPLOAD_S3_SSL=false
+    UPLOAD_S3_KEY_ID=''${MINIO_ACCESS_KEY}
+    UPLOAD_S3_KEY=''${MINIO_SECRET_KEY}
+    EOF
+
+    set +xe
 
     if [ -n "$ZSH_VERSION" ]; then
       autoload -U +X compinit && compinit