diff --git a/package.json b/package.json
index f360c4d1ae8..56e270f36dd 100644
--- a/package.json
+++ b/package.json
@@ -62,12 +62,9 @@
     "lint-fix": "yarn workspaces run lint-fix",
     "lint-check": "yarn workspaces run lint-check",
     "test": "yarn workspaces run test",
-    "build": "yarn workspaces run build",
-    "postinstall": "patch-package"
+    "build": "yarn workspaces run build"
   },
   "dependencies": {
-    "@agoric/store": "^0.2.0",
-    "patch-package": "^6.2.2",
-    "postinstall-postinstall": "^2.1.0"
+    "@agoric/store": "^0.2.0"
   }
 }
diff --git a/patches/depd+1.1.2.patch b/patches/depd+1.1.2.patch
deleted file mode 100644
index 102ea2d4324..00000000000
--- a/patches/depd+1.1.2.patch
+++ /dev/null
@@ -1,529 +0,0 @@
-diff --git a/node_modules/depd/index.js b/node_modules/depd/index.js
-index d758d3c..dbff6c9 100644
---- a/node_modules/depd/index.js
-+++ b/node_modules/depd/index.js
-@@ -1,522 +1 @@
--/*!
-- * depd
-- * Copyright(c) 2014-2017 Douglas Christopher Wilson
-- * MIT Licensed
-- */
--
--/**
-- * Module dependencies.
-- */
--
--var callSiteToString = require('./lib/compat').callSiteToString
--var eventListenerCount = require('./lib/compat').eventListenerCount
--var relative = require('path').relative
--
--/**
-- * Module exports.
-- */
--
--module.exports = depd
--
--/**
-- * Get the path to base files on.
-- */
--
--var basePath = process.cwd()
--
--/**
-- * Determine if namespace is contained in the string.
-- */
--
--function containsNamespace (str, namespace) {
--  var vals = str.split(/[ ,]+/)
--  var ns = String(namespace).toLowerCase()
--
--  for (var i = 0; i < vals.length; i++) {
--    var val = vals[i]
--
--    // namespace contained
--    if (val && (val === '*' || val.toLowerCase() === ns)) {
--      return true
--    }
--  }
--
--  return false
--}
--
--/**
-- * Convert a data descriptor to accessor descriptor.
-- */
--
--function convertDataDescriptorToAccessor (obj, prop, message) {
--  var descriptor = Object.getOwnPropertyDescriptor(obj, prop)
--  var value = descriptor.value
--
--  descriptor.get = function getter () { return value }
--
--  if (descriptor.writable) {
--    descriptor.set = function setter (val) { return (value = val) }
--  }
--
--  delete descriptor.value
--  delete descriptor.writable
--
--  Object.defineProperty(obj, prop, descriptor)
--
--  return descriptor
--}
--
--/**
-- * Create arguments string to keep arity.
-- */
--
--function createArgumentsString (arity) {
--  var str = ''
--
--  for (var i = 0; i < arity; i++) {
--    str += ', arg' + i
--  }
--
--  return str.substr(2)
--}
--
--/**
-- * Create stack string from stack.
-- */
--
--function createStackString (stack) {
--  var str = this.name + ': ' + this.namespace
--
--  if (this.message) {
--    str += ' deprecated ' + this.message
--  }
--
--  for (var i = 0; i < stack.length; i++) {
--    str += '\n    at ' + callSiteToString(stack[i])
--  }
--
--  return str
--}
--
--/**
-- * Create deprecate for namespace in caller.
-- */
--
--function depd (namespace) {
--  if (!namespace) {
--    throw new TypeError('argument namespace is required')
--  }
--
--  var stack = getStack()
--  var site = callSiteLocation(stack[1])
--  var file = site[0]
--
--  function deprecate (message) {
--    // call to self as log
--    log.call(deprecate, message)
--  }
--
--  deprecate._file = file
--  deprecate._ignored = isignored(namespace)
--  deprecate._namespace = namespace
--  deprecate._traced = istraced(namespace)
--  deprecate._warned = Object.create(null)
--
--  deprecate.function = wrapfunction
--  deprecate.property = wrapproperty
--
--  return deprecate
--}
--
--/**
-- * Determine if namespace is ignored.
-- */
--
--function isignored (namespace) {
--  /* istanbul ignore next: tested in a child processs */
--  if (process.noDeprecation) {
--    // --no-deprecation support
--    return true
--  }
--
--  var str = process.env.NO_DEPRECATION || ''
--
--  // namespace ignored
--  return containsNamespace(str, namespace)
--}
--
--/**
-- * Determine if namespace is traced.
-- */
--
--function istraced (namespace) {
--  /* istanbul ignore next: tested in a child processs */
--  if (process.traceDeprecation) {
--    // --trace-deprecation support
--    return true
--  }
--
--  var str = process.env.TRACE_DEPRECATION || ''
--
--  // namespace traced
--  return containsNamespace(str, namespace)
--}
--
--/**
-- * Display deprecation message.
-- */
--
--function log (message, site) {
--  var haslisteners = eventListenerCount(process, 'deprecation') !== 0
--
--  // abort early if no destination
--  if (!haslisteners && this._ignored) {
--    return
--  }
--
--  var caller
--  var callFile
--  var callSite
--  var depSite
--  var i = 0
--  var seen = false
--  var stack = getStack()
--  var file = this._file
--
--  if (site) {
--    // provided site
--    depSite = site
--    callSite = callSiteLocation(stack[1])
--    callSite.name = depSite.name
--    file = callSite[0]
--  } else {
--    // get call site
--    i = 2
--    depSite = callSiteLocation(stack[i])
--    callSite = depSite
--  }
--
--  // get caller of deprecated thing in relation to file
--  for (; i < stack.length; i++) {
--    caller = callSiteLocation(stack[i])
--    callFile = caller[0]
--
--    if (callFile === file) {
--      seen = true
--    } else if (callFile === this._file) {
--      file = this._file
--    } else if (seen) {
--      break
--    }
--  }
--
--  var key = caller
--    ? depSite.join(':') + '__' + caller.join(':')
--    : undefined
--
--  if (key !== undefined && key in this._warned) {
--    // already warned
--    return
--  }
--
--  this._warned[key] = true
--
--  // generate automatic message from call site
--  var msg = message
--  if (!msg) {
--    msg = callSite === depSite || !callSite.name
--      ? defaultMessage(depSite)
--      : defaultMessage(callSite)
--  }
--
--  // emit deprecation if listeners exist
--  if (haslisteners) {
--    var err = DeprecationError(this._namespace, msg, stack.slice(i))
--    process.emit('deprecation', err)
--    return
--  }
--
--  // format and write message
--  var format = process.stderr.isTTY
--    ? formatColor
--    : formatPlain
--  var output = format.call(this, msg, caller, stack.slice(i))
--  process.stderr.write(output + '\n', 'utf8')
--}
--
--/**
-- * Get call site location as array.
-- */
--
--function callSiteLocation (callSite) {
--  var file = callSite.getFileName() || '<anonymous>'
--  var line = callSite.getLineNumber()
--  var colm = callSite.getColumnNumber()
--
--  if (callSite.isEval()) {
--    file = callSite.getEvalOrigin() + ', ' + file
--  }
--
--  var site = [file, line, colm]
--
--  site.callSite = callSite
--  site.name = callSite.getFunctionName()
--
--  return site
--}
--
--/**
-- * Generate a default message from the site.
-- */
--
--function defaultMessage (site) {
--  var callSite = site.callSite
--  var funcName = site.name
--
--  // make useful anonymous name
--  if (!funcName) {
--    funcName = '<anonymous@' + formatLocation(site) + '>'
--  }
--
--  var context = callSite.getThis()
--  var typeName = context && callSite.getTypeName()
--
--  // ignore useless type name
--  if (typeName === 'Object') {
--    typeName = undefined
--  }
--
--  // make useful type name
--  if (typeName === 'Function') {
--    typeName = context.name || typeName
--  }
--
--  return typeName && callSite.getMethodName()
--    ? typeName + '.' + funcName
--    : funcName
--}
--
--/**
-- * Format deprecation message without color.
-- */
--
--function formatPlain (msg, caller, stack) {
--  var timestamp = new Date().toUTCString()
--
--  var formatted = timestamp +
--    ' ' + this._namespace +
--    ' deprecated ' + msg
--
--  // add stack trace
--  if (this._traced) {
--    for (var i = 0; i < stack.length; i++) {
--      formatted += '\n    at ' + callSiteToString(stack[i])
--    }
--
--    return formatted
--  }
--
--  if (caller) {
--    formatted += ' at ' + formatLocation(caller)
--  }
--
--  return formatted
--}
--
--/**
-- * Format deprecation message with color.
-- */
--
--function formatColor (msg, caller, stack) {
--  var formatted = '\x1b[36;1m' + this._namespace + '\x1b[22;39m' + // bold cyan
--    ' \x1b[33;1mdeprecated\x1b[22;39m' + // bold yellow
--    ' \x1b[0m' + msg + '\x1b[39m' // reset
--
--  // add stack trace
--  if (this._traced) {
--    for (var i = 0; i < stack.length; i++) {
--      formatted += '\n    \x1b[36mat ' + callSiteToString(stack[i]) + '\x1b[39m' // cyan
--    }
--
--    return formatted
--  }
--
--  if (caller) {
--    formatted += ' \x1b[36m' + formatLocation(caller) + '\x1b[39m' // cyan
--  }
--
--  return formatted
--}
--
--/**
-- * Format call site location.
-- */
--
--function formatLocation (callSite) {
--  return relative(basePath, callSite[0]) +
--    ':' + callSite[1] +
--    ':' + callSite[2]
--}
--
--/**
-- * Get the stack as array of call sites.
-- */
--
--function getStack () {
--  var limit = Error.stackTraceLimit
--  var obj = {}
--  var prep = Error.prepareStackTrace
--
--  Error.prepareStackTrace = prepareObjectStackTrace
--  Error.stackTraceLimit = Math.max(10, limit)
--
--  // capture the stack
--  Error.captureStackTrace(obj)
--
--  // slice this function off the top
--  var stack = obj.stack.slice(1)
--
--  Error.prepareStackTrace = prep
--  Error.stackTraceLimit = limit
--
--  return stack
--}
--
--/**
-- * Capture call site stack from v8.
-- */
--
--function prepareObjectStackTrace (obj, stack) {
--  return stack
--}
--
--/**
-- * Return a wrapped function in a deprecation message.
-- */
--
--function wrapfunction (fn, message) {
--  if (typeof fn !== 'function') {
--    throw new TypeError('argument fn must be a function')
--  }
--
--  var args = createArgumentsString(fn.length)
--  var deprecate = this // eslint-disable-line no-unused-vars
--  var stack = getStack()
--  var site = callSiteLocation(stack[1])
--
--  site.name = fn.name
--
--   // eslint-disable-next-line no-eval
--  var deprecatedfn = eval('(function (' + args + ') {\n' +
--    '"use strict"\n' +
--    'log.call(deprecate, message, site)\n' +
--    'return fn.apply(this, arguments)\n' +
--    '})')
--
--  return deprecatedfn
--}
--
--/**
-- * Wrap property in a deprecation message.
-- */
--
--function wrapproperty (obj, prop, message) {
--  if (!obj || (typeof obj !== 'object' && typeof obj !== 'function')) {
--    throw new TypeError('argument obj must be object')
--  }
--
--  var descriptor = Object.getOwnPropertyDescriptor(obj, prop)
--
--  if (!descriptor) {
--    throw new TypeError('must call property on owner object')
--  }
--
--  if (!descriptor.configurable) {
--    throw new TypeError('property must be configurable')
--  }
--
--  var deprecate = this
--  var stack = getStack()
--  var site = callSiteLocation(stack[1])
--
--  // set site name
--  site.name = prop
--
--  // convert data descriptor
--  if ('value' in descriptor) {
--    descriptor = convertDataDescriptorToAccessor(obj, prop, message)
--  }
--
--  var get = descriptor.get
--  var set = descriptor.set
--
--  // wrap getter
--  if (typeof get === 'function') {
--    descriptor.get = function getter () {
--      log.call(deprecate, message, site)
--      return get.apply(this, arguments)
--    }
--  }
--
--  // wrap setter
--  if (typeof set === 'function') {
--    descriptor.set = function setter () {
--      log.call(deprecate, message, site)
--      return set.apply(this, arguments)
--    }
--  }
--
--  Object.defineProperty(obj, prop, descriptor)
--}
--
--/**
-- * Create DeprecationError for deprecation
-- */
--
--function DeprecationError (namespace, message, stack) {
--  var error = new Error()
--  var stackString
--
--  Object.defineProperty(error, 'constructor', {
--    value: DeprecationError
--  })
--
--  Object.defineProperty(error, 'message', {
--    configurable: true,
--    enumerable: false,
--    value: message,
--    writable: true
--  })
--
--  Object.defineProperty(error, 'name', {
--    enumerable: false,
--    configurable: true,
--    value: 'DeprecationError',
--    writable: true
--  })
--
--  Object.defineProperty(error, 'namespace', {
--    configurable: true,
--    enumerable: false,
--    value: namespace,
--    writable: true
--  })
--
--  Object.defineProperty(error, 'stack', {
--    configurable: true,
--    enumerable: false,
--    get: function () {
--      if (stackString !== undefined) {
--        return stackString
--      }
--
--      // prepare stack trace
--      return (stackString = createStackString.call(this, stack))
--    },
--    set: function setter (val) {
--      stackString = val
--    }
--  })
--
--  return error
--}
-+module.exports = require('./lib/browser/index.js')
-\ No newline at end of file
diff --git a/yarn.lock b/yarn.lock
index 529fc738692..7093972a611 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3193,11 +3193,6 @@
   resolved "https://registry.yarnpkg.com/@xtuc/long/-/long-4.2.2.tgz#d291c6a4e97989b5c61d9acf396ae4fe133a718d"
   integrity sha512-NuHqBY1PB/D8xU6s/thBgOAiAP7HOYDQ32+BFZILJ8ivkUkAHQnWfn6WhL79Owj1qmUnoN/YPhktdIoucipkAQ==
 
-"@yarnpkg/lockfile@^1.1.0":
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/@yarnpkg/lockfile/-/lockfile-1.1.0.tgz#e77a97fbd345b76d83245edcd17d393b1b41fb31"
-  integrity sha512-GpSwvyXOcOOlV70vbnzjj4fW5xW/FdUF6nQEt1ENy7m4ZCczi1+/buVUPAqmGfqznsORNFzUMjctTIp8a9tuCQ==
-
 "@zkochan/cmd-shim@^3.1.0":
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/@zkochan/cmd-shim/-/cmd-shim-3.1.0.tgz#2ab8ed81f5bb5452a85f25758eb9b8681982fd2e"
@@ -6935,14 +6930,6 @@ find-up@^3.0.0:
   dependencies:
     locate-path "^3.0.0"
 
-find-yarn-workspace-root@^1.2.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/find-yarn-workspace-root/-/find-yarn-workspace-root-1.2.1.tgz#40eb8e6e7c2502ddfaa2577c176f221422f860db"
-  integrity sha512-dVtfb0WuQG+8Ag2uWkbG79hOUzEsRrhBzgfn86g2sJPkzmcpGdghbNTfUKGTxymFrY/tLIodDzLoW9nOJ4FY8Q==
-  dependencies:
-    fs-extra "^4.0.3"
-    micromatch "^3.1.4"
-
 findit@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/findit/-/findit-2.0.0.tgz#6509f0126af4c178551cfa99394e032e13a4d56e"
@@ -7098,7 +7085,7 @@ fs-exists-cached@^1.0.0:
   resolved "https://registry.yarnpkg.com/fs-exists-cached/-/fs-exists-cached-1.0.0.tgz#cf25554ca050dc49ae6656b41de42258989dcbce"
   integrity sha1-zyVVTKBQ3EmuZla0HeQiWJidy84=
 
-fs-extra@^4.0.2, fs-extra@^4.0.3:
+fs-extra@^4.0.2:
   version "4.0.3"
   resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-4.0.3.tgz#0d852122e5bc5beb453fb028e9c0c9bf36340c94"
   integrity sha512-q6rbdDd1o2mAnQreO7YADIxf/Whx4AHBiRf6d+/cVT8h44ss+lHgxf1FemcqDnQt9X3ct4McHr+JMGlYSsK7Cg==
@@ -7107,7 +7094,7 @@ fs-extra@^4.0.2, fs-extra@^4.0.3:
     jsonfile "^4.0.0"
     universalify "^0.1.0"
 
-fs-extra@^7.0.0, fs-extra@^7.0.1:
+fs-extra@^7.0.0:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-7.0.1.tgz#4f189c44aa123b895f722804f55ea23eadc348e9"
   integrity sha512-YJDaCJZEnBmcbw13fvdAM9AwNOJwOzrE4pqMqBq5nFiEqXUqHwlK4B+3pUw6JNvfSPtX05xFHtYy/1ni01eGCw==
@@ -9271,13 +9258,6 @@ kind-of@^6.0.0, kind-of@^6.0.2:
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.3.tgz#07c05034a6c349fa06e24fa35aa76db4580ce4dd"
   integrity sha512-dcS1ul+9tmeD95T+x28/ehLgd9mENa3LsvDTtzm3vyBEO7RPptvAD+t44WVXaUjTBRcrpFeFlC8WCruUR456hw==
 
-klaw-sync@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/klaw-sync/-/klaw-sync-6.0.0.tgz#1fd2cfd56ebb6250181114f0a581167099c2b28c"
-  integrity sha512-nIeuVSzdCCs6TDPTqI8w1Yre34sSq7AkZ4B3sfOBbI2CgVSB4Du4aLQijFU2+lhAFCwt9+42Hel6lQNIv6AntQ==
-  dependencies:
-    graceful-fs "^4.1.11"
-
 kleur@^3.0.3:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/kleur/-/kleur-3.0.3.tgz#a79c9ecc86ee1ce3fa6206d1216c501f147fc07e"
@@ -11112,24 +11092,6 @@ pascalcase@^0.1.1:
   resolved "https://registry.yarnpkg.com/pascalcase/-/pascalcase-0.1.1.tgz#b363e55e8006ca6fe21784d2db22bd15d7917f14"
   integrity sha1-s2PlXoAGym/iF4TS2yK9FdeRfxQ=
 
-patch-package@^6.2.2:
-  version "6.2.2"
-  resolved "https://registry.yarnpkg.com/patch-package/-/patch-package-6.2.2.tgz#71d170d650c65c26556f0d0fbbb48d92b6cc5f39"
-  integrity sha512-YqScVYkVcClUY0v8fF0kWOjDYopzIM8e3bj/RU1DPeEF14+dCGm6UeOYm4jvCyxqIEQ5/eJzmbWfDWnUleFNMg==
-  dependencies:
-    "@yarnpkg/lockfile" "^1.1.0"
-    chalk "^2.4.2"
-    cross-spawn "^6.0.5"
-    find-yarn-workspace-root "^1.2.1"
-    fs-extra "^7.0.1"
-    is-ci "^2.0.0"
-    klaw-sync "^6.0.0"
-    minimist "^1.2.0"
-    rimraf "^2.6.3"
-    semver "^5.6.0"
-    slash "^2.0.0"
-    tmp "^0.0.33"
-
 path-browserify@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/path-browserify/-/path-browserify-0.0.1.tgz#e6c4ddd7ed3aa27c68a20cc4e50e1a4ee83bbc4a"
@@ -12021,11 +11983,6 @@ postcss@^7, postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.16, po
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
-postinstall-postinstall@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/postinstall-postinstall/-/postinstall-postinstall-2.1.0.tgz#4f7f77441ef539d1512c40bd04c71b06a4704ca3"
-  integrity sha512-7hQX6ZlZXIoRiWNrbMQaLzUUfH+sSx39u8EJ9HYuDc1kLo9IXKWjM5RSquZN1ad5GnH8CGFM78fsAAQi3OKEEQ==
-
 prebuild-install@^5.2.5:
   version "5.3.3"
   resolved "https://registry.yarnpkg.com/prebuild-install/-/prebuild-install-5.3.3.tgz#ef4052baac60d465f5ba6bf003c9c1de79b9da8e"