diff --git a/src/app.ts b/src/app.ts
index 2431b2164..75a2507c5 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -6,11 +6,12 @@ import parse_pkg_str from "./prefab/parse-pkg-str.ts"
 import InstallLogger from "./utils/InstallLogger.ts"
 import internal_use from "./modes/internal.use.ts"
 import { Args as BaseArgs } from "./parse-args.ts"
-import Logger, { teal } from "./utils/Logger.ts"
 import integrate from "./modes/integrate.ts"
 import shellcode from "./modes/shellcode.ts"
+import install from "./modes/install.ts"
 import version from "./modes/version.ts"
-import install from './modes/install.ts'
+import { teal } from "./utils/color.ts"
+import Logger from "./utils/Logger.ts"
 import which from "./modes/which.ts"
 import help from "./modes/help.ts"
 import repl from "./modes/repl.ts"
@@ -51,7 +52,6 @@ export default async function({ flags, ...opts }: Args, logger_prefix?: string)
     const rv = await internal_use({ ...xopts, logger })
     if (rv) {
       console.log(rv.shellcode)
-      console.error('tea:', rv.pkgenv.map(x => `+${utils.pkg.str(x)}`).join(' '))
     }
   } break
   case 'internal.activate': {
diff --git a/src/modes/help.ts b/src/modes/help.ts
index fba974ca5..f991270e4 100644
--- a/src/modes/help.ts
+++ b/src/modes/help.ts
@@ -1,5 +1,5 @@
+import { dim } from "../utils/color.ts"
 import undent from "outdent"
-import { gray } from "../utils/Logger.ts"
 
 export default function(verbosity = 0) {
 
@@ -18,7 +18,7 @@ export default function(verbosity = 0) {
   10  more:
         $ tea --help --verbose
         $ open https://docs.tea.xyz
-      `.replaceAll('$', gray('$')).replaceAll(/#.*/g, gray)
+      `.replaceAll('$', dim('$')).replaceAll(/#.*/g, dim)
   } else {
     //        10|       20|       30|       40|       50|       60|       70| |     80|
     return undent`
@@ -61,6 +61,6 @@ export default function(verbosity = 0) {
       environmental influencers:
         CI        #defaults verbosity to -1 (--quiet)
         CLICOLOR  #see https://bixense.com/clicolors
-    `.replaceAll(/#(.*)/g, (_,x) => gray(` ${x}`))
+    `.replaceAll(/#(.*)/g, (_,x) => dim(` ${x}`))
   }
 }
diff --git a/src/modes/internal.activate.test.ts b/src/modes/internal.activate.test.ts
index 65a401507..f50ed700b 100644
--- a/src/modes/internal.activate.test.ts
+++ b/src/modes/internal.activate.test.ts
@@ -1,4 +1,4 @@
-// deno-lint-ignore-file require-await
+// deno-lint-ignore-file require-await no-explicit-any
 import { fixturesd, null_logger as logger } from "../utils/test-utils.ts"
 import { _internals as _devenv_internals } from "../utils/devenv.ts"
 import specimen0, { _internals } from "./internal.activate.ts"
@@ -43,7 +43,7 @@ Deno.test("internal.activate.ts", async runner => {
 
     await runner.step("existing env matches", async () => {
       const stub = mock.stub(_internals, "getenv", key => {
-        if (key == 'FOO') {
+        if (key == 'FOO' || key == 'PS1') {
           return 'BAR'
         } else {
           return Deno.env.get(key)
diff --git a/src/modes/internal.activate.ts b/src/modes/internal.activate.ts
index 5aa2614ec..fdb56cb23 100644
--- a/src/modes/internal.activate.ts
+++ b/src/modes/internal.activate.ts
@@ -2,6 +2,7 @@ import { PackageRequirement, Path, TeaError, hooks, utils } from "tea"
 import escape_if_necessary from "../utils/sh-escape.ts"
 import construct_env  from "../prefab/construct-env.ts"
 import install, { Logger } from "../prefab/install.ts"
+import { teal } from "../utils/color.ts"
 import devenv from "../utils/devenv.ts"
 import undent from "outdent"
 
@@ -49,11 +50,34 @@ export default async function(dir: Path, opts: { logger: Logger }) {
     rv += `export ${key}=${escape_if_necessary(value)}\n`
   }
 
-  //FIXME doesn't work with warp.dev for fuck knows why reasons
-  // https://github.com/warpdotdev/Warp/issues/3492
-  rv += `export PS1="(tea) $PS1"\n\n`
+  if (/\(tea\)/.test(getenv("PS1") ?? '') == false) {
+    //FIXME doesn't work with warp.dev for fuck knows why reasons
+    // https://github.com/warpdotdev/Warp/issues/3492
+    rv += `export PS1="(tea) $PS1"\n`
+  }
+
+  rv += `export TEA_POWDER="${installations.pkgenv.map(utils.pkg.str).join(' ')}"\n`
+  rv += `export TEA_PKGENV="${installations.installations.map(({pkg}) => utils.pkg.str(pkg)).join(' ')}"\n\n`
+
+  rv += "_tea_reset() {\n"
+  for (const key in env) {
+    const old = getenv(key)
+    if (old !== undefined) {
+      //TODO don’t export if not currently exported!
+      rv += `  export ${key}=${escape_if_necessary(old)}\n`
+    } else {
+      rv += `  unset ${key}\n`
+    }
+  }
+  const ps1 = getenv('PS1')
+  rv += ps1 ? `  export PS1="${ps1}"\n` : "  unset PS1\n"
+  rv += "  unset -f _tea_reset\n"
+  rv += "}\n"
+
+  rv += "\n"
 
-  const off_string = installations.pkgenv.map(x => `-${utils.pkg.str(x)}`).join(' ')
+  const raw_off_string = installations.pkgenv.map(x => `-${utils.pkg.str(x)}`).join(' ')
+  const off_string = installations.pkgenv.map(x => `-${escape_if_necessary(utils.pkg.str(x))}`).join(' ')
 
   rv += undent`
     _tea_should_deactivate_devenv() {
@@ -61,33 +85,29 @@ export default async function(dir: Path, opts: { logger: Logger }) {
       test "$PWD" != "${dir}$suffix"
     }
 
-    _tea_deactivate() {
-      echo 'tea ${off_string}' >&2
+    _tea_dev_off() {
+      echo '${teal('tea')} ${raw_off_string}' >&2
 
-      export PS1="${getenv('PS1')}"
+      tea ${off_string}
 
-      if test "$1" != --shy; then
+      if [ "$1" != --shy ]; then
         rm "${persistence}"
       fi
 
-      unset -f _tea_deactivate
+      unset -f _tea_dev_off _tea_should_deactivate_devenv
 
     `
 
-  for (const key in env) {
+  for (const key in userenv) {
     const value = getenv(key)
-    if (value !== undefined) {
+    if (value) {
       rv += `  export ${key}=${escape_if_necessary(value)}\n`
     } else {
       rv += `  unset ${key}\n`
     }
   }
 
-  rv += "\n"
-  rv += "  _tea_should_deactivate_devenv() {\n"
-  rv += "    return 1\n"
-  rv += "  }\n"
-  rv += "}\n"
+  rv += "}"
 
   return [rv, installations.pkgenv] as [string, PackageRequirement[]]
 }
diff --git a/src/modes/internal.use.test.ts b/src/modes/internal.use.test.ts
index 7581b3dbb..99d9303a7 100644
--- a/src/modes/internal.use.test.ts
+++ b/src/modes/internal.use.test.ts
@@ -1,10 +1,7 @@
 // deno-lint-ignore-file require-await
-import { AmbiguityError, ProvidesError } from "../utils/error.ts"
-import { assertRejects, assertThrows } from "deno/assert/mod.ts"
 import { semver, SemVer, Path, Installation, utils } from "tea"
 import { null_logger as logger } from "../utils/test-utils.ts"
 import specimen0, { _internals } from "./internal.use.ts"
-import usePantry from "tea/hooks/usePantry.ts"
 import * as mock from "deno/testing/mock.ts"
 
 Deno.test("internal.use.ts", async runner => {
@@ -54,7 +51,7 @@ Deno.test("internal.use.ts", async runner => {
 
     await runner.step("existing env matches", async () => {
       const stub4 = mock.stub(_internals, "getenv", key => {
-        if (key == 'FOO') {
+        if (key == 'FOO' || key == 'PS1') {
           return 'BAR'
         } else {
           return Deno.env.get(key)
diff --git a/src/modes/internal.use.ts b/src/modes/internal.use.ts
index f12ed7152..a686f0720 100644
--- a/src/modes/internal.use.ts
+++ b/src/modes/internal.use.ts
@@ -1,9 +1,7 @@
 import escape_if_necessary from "../utils/sh-escape.ts"
 import construct_env from "../prefab/construct-env.ts"
 import install, { Logger } from "../prefab/install.ts"
-import { hooks, PackageRequirement, utils } from "tea"
-
-const { usePantry } = hooks
+import { PackageRequirement, utils } from "tea"
 
 interface Pkgs {
   plus: PackageRequirement[]
@@ -16,12 +14,15 @@ export default async function(opts: { pkgs: Pkgs, logger: Logger, pkgenv?: Recor
 
   const pkgs = consolidate(opts.pkgs)
 
-  let rv = ''
-  const print = (x: string) => rv += x + '\n'
-
   if (pkgs.length == 0) {
-    print('unset TEA_POWDER TEA_PKGENV _tea_reset')
+    return {
+      shellcode: 'unset TEA_POWDER TEA_PKGENV',
+      pkgenv: []
+    }
   } else {
+    let rv = ''
+    const print = (x: string) => rv += x + '\n'
+
     const pkgenv = await install(pkgs, opts)
     const env = await construct_env(pkgenv)
 
@@ -50,7 +51,8 @@ export default async function(opts: { pkgs: Pkgs, logger: Logger, pkgenv?: Recor
         print(`  unset ${key}`)
       }
     }
-    print(`  export PS1="${getenv("PS1")}"`)
+    const ps1 = getenv('PS1')
+    print(ps1 ? `  export PS1="${ps1}"` : '  unset PS1')
     print('  unset -f _tea_reset _tea_install')
     print('}')
 
diff --git a/src/modes/repl.ts b/src/modes/repl.ts
index 8a9739625..ad05bd6de 100644
--- a/src/modes/repl.ts
+++ b/src/modes/repl.ts
@@ -2,7 +2,7 @@ import construct_env from "../prefab/construct-env.ts"
 import install, { Logger } from "../prefab/install.ts"
 import { PackageRequirement, Path, TeaError, utils } from "tea"
 import { basename } from "deno/path/mod.ts"
-import { gray } from "../utils/Logger.ts"
+import { dim } from "../utils/color.ts"
 import exec from "../utils/execve.ts"
 
 export default async function(args: string[], { pkgs, ...opts }: { pkgs: PackageRequirement[], update: boolean | Set<string>, logger: Logger }): Promise<never> {
@@ -10,7 +10,7 @@ export default async function(args: string[], { pkgs, ...opts }: { pkgs: Package
 
   const pkgenv = await install(pkgs, opts)
   const env = await construct_env(pkgenv)
-  const pkgs_str = () => pkgenv.installations.map(({pkg}) => gray(utils.pkg.str(pkg))).join(", ")
+  const pkgs_str = () => pkgenv.installations.map(({pkg}) => dim(utils.pkg.str(pkg))).join(", ")
 
   console.error('this is a temporary shell containing the following packages:')
   console.error(pkgs_str())
diff --git a/src/modes/shellcode.ts b/src/modes/shellcode.ts
index 0558d006f..247669c19 100644
--- a/src/modes/shellcode.ts
+++ b/src/modes/shellcode.ts
@@ -34,7 +34,7 @@ export default function() {
         if type _tea_reset >/dev/null 2>&1; then
           _tea_reset
         fi
-        unset -f _tea_chpwd_hook _tea_should_deactivate_devenv _tea_activate_devenv_if_desired tea t command_not_found_handler tea@latest _tea_commit _tea_deactivate >&2 2>/dev/null
+        unset -f _tea_chpwd_hook _tea_should_deactivate_devenv tea t command_not_found_handler tea@latest _tea_commit _tea_dev_off >/dev/null 2>&1
         echo "tea: shellcode unloaded" >&2;;
       "")
         if [ -f "${prefix}/tmp/shellcode/x.$$" ]; then
@@ -78,11 +78,14 @@ export default function() {
 
     dev() {
       if [ "$1" = 'off' ]; then
-        _tea_deactivate
-      elif type _tea_deactivate >/dev/null 2>&1; then
+        _tea_dev_off
+      elif type _tea_dev_off >/dev/null 2>&1; then
         echo 'dev: environment already active' >&2
         return 1
       else
+        if type _tea_reset >/dev/null 2>&1; then
+          _tea_reset
+        fi
         eval "$(command tea --internal.activate "$PWD" "$@")"
       fi
     }
@@ -109,29 +112,21 @@ export default function() {
     }
 
     _tea_chpwd_hook() {
-      if _tea_should_deactivate_devenv; then
-        _tea_deactivate --shy
+      if _tea_should_deactivate_devenv >/dev/null 2>&1; then
+        _tea_dev_off --shy
       fi
-      if ! type _tea_deactivate >/dev/null 2>&1; then
-        _tea_activate_devenv_if_desired
+      if ! type _tea_dev_off >/dev/null 2>&1; then
+        dir="$PWD"
+        while [ "$dir" != "/" ]; do
+          if [ -f "${prefix}/var/devenv/$dir/xyz.tea.activated" ]; then
+            eval "$(command tea --internal.activate "$dir")"
+            break
+          fi
+          dir="$(dirname "$dir")"
+        done
       fi
     }
 
-    _tea_should_deactivate_devenv() {
-      return 1
-    }
-
-    _tea_activate_devenv_if_desired() {
-      dir="$PWD"
-      while [ "$dir" != "/" ]; do
-        if [ -f "${prefix}/var/devenv/$dir/xyz.tea.activated" ]; then
-          eval "$(command tea --internal.activate "$dir")"
-          break
-        fi
-        dir="$(dirname "$dir")"
-      done
-    }
-
     if test -n "$ZSH_VERSION"; then
       eval 'typeset -ag chpwd_functions
 
diff --git a/src/utils/InstallLogger.ts b/src/utils/InstallLogger.ts
index 48c01f04e..b3fc8f54f 100644
--- a/src/utils/InstallLogger.ts
+++ b/src/utils/InstallLogger.ts
@@ -1,6 +1,7 @@
 import { PackageSpecification, Package, utils, Path, Installation } from "tea"
 import { Logger as BaseInstallLogger } from "tea/plumbing/install.ts"
-import Logger, { teal,inverse_teal,gray } from "./Logger.ts"
+import { teal, inverse_teal, dim } from "./color.ts"
+import Logger from "./Logger.ts"
 import useConfig from "tea/hooks/useConfig.ts"
 
 export default class implements BaseInstallLogger {
@@ -82,13 +83,13 @@ export default class implements BaseInstallLogger {
     const total = Object.values(this.totals).reduce((a, b) => a + b, 0)
 
     const speed = this.total_rcvd() / (Date.now() - this.start) * 1000
-    str += gray(`${pretty_size(speed)[0]}/s`)
+    str += dim(`${pretty_size(speed)[0]}/s`)
 
     if (rcvd && total) {
       const [pretty_total, divisor] = pretty_size(total, 0)
       const n = rcvd / divisor
       const pretty_rcvd = n.toFixed(precision(n))
-      str += gray(` ${pretty_rcvd}/${pretty_total}`)
+      str += dim(` ${pretty_rcvd}/${pretty_total}`)
     }
 
     this.logger.replace(`${prefix} ${str}`)
@@ -116,10 +117,10 @@ function precision(n: number) {
 const log_installed_msg = (pkg: Package, title: string, logger: Logger) => {
   const { prefix } = useConfig()
   const pkg_prefix_str = (pkg: Package) => [
-    gray(prefix.prettyString()),
+    dim(prefix.prettyString()),
     pkg.project,
-    `${gray('v')}${pkg.version}`
-  ].join(gray('/'))
+    `${dim('v')}${pkg.version}`
+  ].join(dim('/'))
 
   const str = pkg_prefix_str(pkg)
   logger!.replace(`${title} ${str}`, { prefix: false })
diff --git a/src/utils/Logger.ts b/src/utils/Logger.ts
index 8314af665..f122bccd4 100644
--- a/src/utils/Logger.ts
+++ b/src/utils/Logger.ts
@@ -1,10 +1,6 @@
-import { dim as gray, rgb8, bgRgb8, stripColor } from "deno/fmt/colors.ts"
+import { stripAnsiCode } from "deno/fmt/colors.ts"
 import { ansi } from "cliffy/ansi/ansi.ts"
-
-export const teal = (x: string) => rgb8(x, 86)
-export { gray }
-
-export const inverse_teal = (x: string) => bgRgb8(x, 86)
+import { dim } from "./color.ts"
 
 export default class Logger {
   lines = 0
@@ -17,7 +13,7 @@ export default class Logger {
   //TODO don’t erase whole lines, just erase the part that is different
   replace(line: string, opts: { prefix: boolean } = {prefix: true}) {
     if (opts.prefix && this.prefix) {
-      line = `${gray(this.prefix)}${line}`
+      line = `${dim(this.prefix)}${line}`
     }
 
     Deno.stderr.writeSync(this._clear().text(line).bytes())
@@ -52,7 +48,7 @@ function ln(s: string) {
     const { columns } = Deno.consoleSize()
     if (columns == 0) return 0
     // remove ansi escapes to get actual length
-    const n = stripColor(s).length
+    const n = stripAnsiCode(s).length
     return Math.floor(n / columns)
   } catch {
     // consoleSize() throws if not a tty
diff --git a/src/utils/color.test.ts b/src/utils/color.test.ts
new file mode 100644
index 000000000..f2b093b51
--- /dev/null
+++ b/src/utils/color.test.ts
@@ -0,0 +1,20 @@
+import { assertEquals } from "deno/assert/mod.ts";
+import { teal, dim, inverse_teal } from "./color.ts";
+
+Deno.test("color", async runner => {
+
+  await runner.step("teal", () => {
+    assertEquals(teal("Hello"), "\x1b[38;5;86mHello\x1b[39m")
+  })
+
+  await runner.step("dim", () => {
+    const input = "Hello";
+    const expected = "\x1b[2mHello\x1b[22m";
+
+    assertEquals(dim(input), expected);
+  })
+
+  await runner.step("inverse_teal", () => {
+    assertEquals(inverse_teal("Hello"), "\x1b[48;5;86mHello\x1b[49m");
+  })
+})
diff --git a/src/utils/color.ts b/src/utils/color.ts
new file mode 100644
index 000000000..8957b9630
--- /dev/null
+++ b/src/utils/color.ts
@@ -0,0 +1,5 @@
+import { dim, rgb8, bgRgb8 } from "deno/fmt/colors.ts"
+
+export const teal = (x: string) => rgb8(x, 86)
+export { dim }
+export const inverse_teal = (x: string) => bgRgb8(x, 86)