diff --git a/Makefile b/Makefile
index 2d64b5dccf..ccea8879be 100644
--- a/Makefile
+++ b/Makefile
@@ -5,13 +5,13 @@ PKGS = minima extrema rusthello prog
 .PHONY: build build-all install release test clean
 
 build:
-	nix-build -A urbit -A urb --no-out-link
+	nix-build -A urbit -A herb --no-out-link
 
 build-all:
 	nix-build --no-out-link
 
 install:
-	nix-env -f . -iA urbit -iA urbit-debug -iA urb
+	nix-env -f . -iA urbit -iA urbit-debug -iA herb
 
 release:
 	sh/release urbit linux32
diff --git a/pkg/urbit/Spec/flw.txt b/doc/spec/flw.txt
similarity index 100%
rename from pkg/urbit/Spec/flw.txt
rename to doc/spec/flw.txt
diff --git a/pkg/urbit/Spec/http-ports.txt b/doc/spec/http-ports.txt
similarity index 100%
rename from pkg/urbit/Spec/http-ports.txt
rename to doc/spec/http-ports.txt
diff --git a/pkg/urbit/Spec/nock/4.txt b/doc/spec/nock/4.txt
similarity index 100%
rename from pkg/urbit/Spec/nock/4.txt
rename to doc/spec/nock/4.txt
diff --git a/pkg/urbit/Spec/nock/5.txt b/doc/spec/nock/5.txt
similarity index 100%
rename from pkg/urbit/Spec/nock/5.txt
rename to doc/spec/nock/5.txt
diff --git a/pkg/urbit/Spec/u3.md b/doc/spec/u3.md
similarity index 100%
rename from pkg/urbit/Spec/u3.md
rename to doc/spec/u3.md
diff --git a/pkg/urbit/extras/extras_README b/extras/extras_README
similarity index 100%
rename from pkg/urbit/extras/extras_README
rename to extras/extras_README
diff --git a/pkg/urbit/extras/hoon-mode.el/hoon-mode.el b/extras/hoon-mode.el/hoon-mode.el
similarity index 100%
rename from pkg/urbit/extras/hoon-mode.el/hoon-mode.el
rename to extras/hoon-mode.el/hoon-mode.el
diff --git a/pkg/urbit/extras/hoon.vim/ftdetect/hoonfiletype.vim b/extras/hoon.vim/ftdetect/hoonfiletype.vim
similarity index 100%
rename from pkg/urbit/extras/hoon.vim/ftdetect/hoonfiletype.vim
rename to extras/hoon.vim/ftdetect/hoonfiletype.vim
diff --git a/pkg/urbit/extras/hoon.vim/ftplugin/hoon.vim b/extras/hoon.vim/ftplugin/hoon.vim
similarity index 100%
rename from pkg/urbit/extras/hoon.vim/ftplugin/hoon.vim
rename to extras/hoon.vim/ftplugin/hoon.vim
diff --git a/pkg/urbit/extras/hoon.vim/indent/hoon.vim b/extras/hoon.vim/indent/hoon.vim
similarity index 100%
rename from pkg/urbit/extras/hoon.vim/indent/hoon.vim
rename to extras/hoon.vim/indent/hoon.vim
diff --git a/pkg/urbit/extras/hoon.vim/syntax/hoon.vim b/extras/hoon.vim/syntax/hoon.vim
similarity index 100%
rename from pkg/urbit/extras/hoon.vim/syntax/hoon.vim
rename to extras/hoon.vim/syntax/hoon.vim
diff --git a/pkg/urbit/extras/hoonSublime/Comments.tmPreferences b/extras/hoonSublime/Comments.tmPreferences
similarity index 100%
rename from pkg/urbit/extras/hoonSublime/Comments.tmPreferences
rename to extras/hoonSublime/Comments.tmPreferences
diff --git a/pkg/urbit/extras/hoonSublime/hoon.YAML-tmLanguage b/extras/hoonSublime/hoon.YAML-tmLanguage
similarity index 100%
rename from pkg/urbit/extras/hoonSublime/hoon.YAML-tmLanguage
rename to extras/hoonSublime/hoon.YAML-tmLanguage
diff --git a/pkg/urbit/extras/hoonSublime/hoon.tmLanguage b/extras/hoonSublime/hoon.tmLanguage
similarity index 100%
rename from pkg/urbit/extras/hoonSublime/hoon.tmLanguage
rename to extras/hoonSublime/hoon.tmLanguage
diff --git a/nix/ops/brass/builder.sh b/nix/ops/brass/builder.sh
index 8c8677a5f9..408dc99bbd 100755
--- a/nix/ops/brass/builder.sh
+++ b/nix/ops/brass/builder.sh
@@ -15,13 +15,13 @@ cleanup () {
 
 trap cleanup EXIT
 
-urb ./zod -p hood -d '+hood/autoload |'
-urb ./zod -p hood -d "+hood/mount %"
+herb ./zod -p hood -d '+hood/autoload |'
+herb ./zod -p hood -d "+hood/mount %"
 
 rm -r ./zod/home
 cp -r $ARVO ./zod/home
 
-urb ./zod -p hood       -d "+hood/commit %home"
-urb ./zod -P brass.pill -d '+brass'
+herb ./zod -p hood       -d "+hood/commit %home"
+herb ./zod -P brass.pill -d '+brass'
 
 mv brass.pill $out
diff --git a/nix/ops/brass/default.nix b/nix/ops/brass/default.nix
index 45253b9b6a..50b8e98ce3 100644
--- a/nix/ops/brass/default.nix
+++ b/nix/ops/brass/default.nix
@@ -3,7 +3,7 @@
 pkgs.stdenv.mkDerivation rec {
   name        = "brass";
   builder     = ./builder.sh;
-  buildInputs = [ urbit tlon.urb pkgs.coreutils ];
+  buildInputs = [ urbit tlon.herb pkgs.coreutils ];
 
   FAKEZOD = fakezod;
   ARVO    = arvo;
diff --git a/nix/ops/fakeship/builder.sh b/nix/ops/fakeship/builder.sh
index 8a00b164ac..1a5c422311 100755
--- a/nix/ops/fakeship/builder.sh
+++ b/nix/ops/fakeship/builder.sh
@@ -5,13 +5,13 @@ set -ex
 urbit -d -F $SHIP -B "$PILL" $out
 
 check () {
-  [ 3 -eq "$(urb $out -d 3)" ]
+  [ 3 -eq "$(herb $out -d 3)" ]
 }
 
 if check
 then
     echo "Boot success." >&2
-    urb $out -p hood -d '+hood/exit' || true
+    herb $out -p hood -d '+hood/exit' || true
 else
     echo "Boot failure." >&2
     kill $(< $out/.vere.lock) || true
diff --git a/nix/ops/fakeship/default.nix b/nix/ops/fakeship/default.nix
index 133a1ba3b1..7d534fd20b 100644
--- a/nix/ops/fakeship/default.nix
+++ b/nix/ops/fakeship/default.nix
@@ -3,7 +3,7 @@
 pkgs.stdenv.mkDerivation rec {
   name        = "fake" + ship;
   builder     = ./builder.sh;
-  buildInputs = [ urbit tlon.urb ];
+  buildInputs = [ urbit tlon.herb ];
   PILL        = brass;
   SHIP        = ship;
 }
diff --git a/nix/ops/solid/builder.sh b/nix/ops/solid/builder.sh
index 0c94c14a55..345c92d188 100755
--- a/nix/ops/solid/builder.sh
+++ b/nix/ops/solid/builder.sh
@@ -15,8 +15,8 @@ cleanup () {
 
 trap cleanup EXIT
 
-urb ./zod -p hood -d '+hood/autoload |'
-urb ./zod -p hood -d "+hood/mount %"
+herb ./zod -p hood -d '+hood/autoload |'
+herb ./zod -p hood -d "+hood/mount %"
 
 rm -r ./zod/home
 cp -r $ARVO ./zod/home
@@ -25,7 +25,7 @@ cp -r $ARVO ./zod/home
 # cp    $ARVO/gen/solid.hoon ./zod/home/gen/
 # cp    $ARVO/lib/pill.hoon  ./zod/home/lib/
 
-urb ./zod -p hood       -d "+hood/commit %home"
-urb ./zod -P urbit.pill -d '+solid, =dub &'
+herb ./zod -p hood       -d "+hood/commit %home"
+herb ./zod -P urbit.pill -d '+solid, =dub &'
 
 mv urbit.pill $out
diff --git a/nix/ops/solid/default.nix b/nix/ops/solid/default.nix
index 9834568910..370aaf4a3d 100644
--- a/nix/ops/solid/default.nix
+++ b/nix/ops/solid/default.nix
@@ -3,7 +3,7 @@
 pkgs.stdenv.mkDerivation rec {
   name        = "solid";
   builder     = ./builder.sh;
-  buildInputs = [ urbit tlon.urb pkgs.coreutils ];
+  buildInputs = [ urbit tlon.herb pkgs.coreutils ];
 
   FAKEZOD = fakezod;
   ARVO    = arvo;
diff --git a/nix/ops/test/builder.sh b/nix/ops/test/builder.sh
index 45cda7d3e1..8034ea55ec 100644
--- a/nix/ops/test/builder.sh
+++ b/nix/ops/test/builder.sh
@@ -20,29 +20,29 @@ shutdown () {
 
 trap shutdown EXIT
 
-urb ./ship -p hood -d '+hood/autoload |'
-urb ./ship -p hood -d '+hood/mount %'
+herb ./ship -p hood -d '+hood/autoload |'
+herb ./ship -p hood -d '+hood/mount %'
 
 rm -r ./ship/home
 cp -r $ARVO ./ship/home
 
-urb ./ship -p hood -d '+hood/commit %home'
+herb ./ship -p hood -d '+hood/commit %home'
 
 # Start the test app
-urb ./ship -p hood -d '+hood/start %test'
+herb ./ship -p hood -d '+hood/start %test'
 
 # Run the %cores tests
-urb ./ship -d '~&  ~  ~&  %start-test-cores  ~'
-urb ./ship -p test -d ':-  %cores  /'
-urb ./ship -d '~&  %finish-test-cores  ~'
+herb ./ship -d '~&  ~  ~&  %start-test-cores  ~'
+herb ./ship -p test -d ':-  %cores  /'
+herb ./ship -d '~&  %finish-test-cores  ~'
 
 # Run the %renders tests
-urb ./ship -d '~&  ~  ~&  %start-test-renders  ~'
-urb ./ship -p test -d ':-  %renders  /'
-urb ./ship -d '~&  %finish-test-renders  ~'
+herb ./ship -d '~&  ~  ~&  %start-test-renders  ~'
+herb ./ship -p test -d ':-  %renders  /'
+herb ./ship -d '~&  %finish-test-renders  ~'
 
 # Run the test generator
-urb ./ship -d '+test, =seed `@uvI`(shaz %reproducible)' |
+herb ./ship -d '+test, =seed `@uvI`(shaz %reproducible)' |
   tee test-generator-output
 
 shutdown
diff --git a/nix/ops/test/default.nix b/nix/ops/test/default.nix
index 3a18414952..b6f4c26d84 100644
--- a/nix/ops/test/default.nix
+++ b/nix/ops/test/default.nix
@@ -3,7 +3,7 @@
 pkgs.stdenv.mkDerivation rec {
   name        = "test";
   builder     = ./builder.sh;
-  buildInputs = [ urbit tlon.urb pkgs.coreutils ];
+  buildInputs = [ urbit tlon.herb pkgs.coreutils ];
 
   SHIP = ship;
   ARVO = arvo;
diff --git a/nix/pkgs/default.nix b/nix/pkgs/default.nix
index ee384fcc9e..1f7fa7fbf2 100644
--- a/nix/pkgs/default.nix
+++ b/nix/pkgs/default.nix
@@ -4,26 +4,20 @@ let
 
   deps = import ../deps { inherit pkgs; };
 
+  ent  = import ./ent          { inherit pkgs; };
+  arvo = import ./arvo         { inherit pkgs; };
+  herb = import ../../pkg/herb { inherit pkgs; };
+
+  mkUrbit = { debug }:
+    import ./urbit {
+      inherit pkgs ent debug;
+      inherit (deps) argon2 murmur3 uv ed25519 sni scrypt softfloat3;
+      inherit (deps) secp256k1 h2o;
+    };
+
+  urbit       = mkUrbit { debug=false; };
+  urbit-debug = mkUrbit { debug=true; };
+
 in
 
-rec {
-  arvo         = import ./arvo         { inherit pkgs; };
-  ent          = import ./ent          { inherit pkgs; };
-  urb          = import ../../pkg/urb  { inherit pkgs; };
-
-  urbit = import ./urbit {
-    inherit pkgs ent;
-    inherit (deps) argon2 murmur3 uv ed25519 sni scrypt softfloat3;
-    inherit (deps) secp256k1 h2o;
-    name = "urbit";
-    debug = false;
-  };
-
-  urbit-debug = import ./urbit {
-    inherit pkgs ent;
-    inherit (deps) argon2 murmur3 uv ed25519 sni scrypt softfloat3;
-    inherit (deps) secp256k1 h2o;
-    name = "urbit-debug";
-    debug = true;
-  };
-}
+{ inherit ent arvo herb urbit urbit-debug; }
diff --git a/nix/pkgs/urbit/builder.sh b/nix/pkgs/urbit/builder.sh
index 3b9ee115e4..bb04e4df58 100644
--- a/nix/pkgs/urbit/builder.sh
+++ b/nix/pkgs/urbit/builder.sh
@@ -6,7 +6,9 @@ cd src
 
 bash ./configure
 
+make clean
 make urbit urbit-worker -j8
+make test
 
 mkdir -p $out/bin
 cp urbit $out/bin/$exename
diff --git a/nix/pkgs/urbit/default.nix b/nix/pkgs/urbit/default.nix
index b536eef94e..8c80427d4a 100644
--- a/nix/pkgs/urbit/default.nix
+++ b/nix/pkgs/urbit/default.nix
@@ -1,12 +1,14 @@
 {
   pkgs,
-  name ? "urbit",
-  debug ? false,
+  debug,
   argon2, ed25519, ent, h2o, murmur3, scrypt, secp256k1, sni, softfloat3, uv
 }:
 
 let
 
+  name =
+    if debug then "urbit-debug" else "urbit";
+
   deps =
     with pkgs;
     [ curl gmp libsigsegv ncurses openssl zlib ];
@@ -14,16 +16,6 @@ let
   vendor =
     [ argon2 softfloat3 ed25519 ent h2o scrypt uv murmur3 secp256k1 sni ];
 
-  # osx =
-    # with pkgs;
-    # lib.optionals stdenv.isDarwin (
-      # with darwin.apple_sdk.frameworks;
-        # [ Cocoa CoreServices ]);
-
-  # NIX_LDFLAGS =
-    # pkgs.lib.optionalString pkgs.stdenv.isDarwin
-      # "-framework CoreServices -framework CoreFoundation";
-
 in
 
 pkgs.stdenv.mkDerivation {
diff --git a/nix/pkgs/urbit/shell.nix b/nix/pkgs/urbit/shell.nix
index 310b3eba1b..4a6ea350e4 100644
--- a/nix/pkgs/urbit/shell.nix
+++ b/nix/pkgs/urbit/shell.nix
@@ -8,6 +8,7 @@ in
 
 import ./default.nix {
   inherit pkgs;
+  debug = false;
   inherit (tlon) ent;
   inherit (deps)
     argon2 ed25519 h2o murmur3 scrypt secp256k1 sni softfloat3 uv;
diff --git a/pkg/urb/.gitignore b/pkg/herb/.gitignore
similarity index 100%
rename from pkg/urb/.gitignore
rename to pkg/herb/.gitignore
diff --git a/pkg/urb/LICENSE b/pkg/herb/LICENSE
similarity index 100%
rename from pkg/urb/LICENSE
rename to pkg/herb/LICENSE
diff --git a/pkg/urb/README.md b/pkg/herb/README.md
similarity index 60%
rename from pkg/urb/README.md
rename to pkg/herb/README.md
index 097d8b843e..d0f2eab8f1 100644
--- a/pkg/urb/README.md
+++ b/pkg/herb/README.md
@@ -1,4 +1,4 @@
-# urb
+# Herb
 
 Unix control of Urbit
 
@@ -7,10 +7,10 @@ Unix control of Urbit
 To run without installing anything:
 
 ```bash
-nix-shell --pure --command 'python ./urb -d "(add 3 4)"'
+nix-shell --pure --command 'python ./herb -d "(add 3 4)"'
 ```
 
-To install `urb`:
+To install `herb`:
 
 ```bash
 nix-env -if .
diff --git a/pkg/urb/default.nix b/pkg/herb/default.nix
similarity index 79%
rename from pkg/urb/default.nix
rename to pkg/herb/default.nix
index 2aff0056bd..b1dd819a6a 100644
--- a/pkg/urb/default.nix
+++ b/pkg/herb/default.nix
@@ -21,19 +21,19 @@ let
 in
 
 pkgs.stdenv.mkDerivation rec {
-  name         = "urb";
+  name         = "herb";
   buildInputs  = [ pyenv ];
   unpackPhase  = "true";
   installPhase = ''
     mkdir -p $out/bin
 
-    cp ${./urb} $out/bin/urb.py
+    cp ${./herb} $out/bin/herb.py
 
-    cat > $out/bin/urb <<EOF
+    cat > $out/bin/herb <<EOF
     #!/usr/bin/env bash
-    ${pyexe} $out/bin/urb.py "\$@"
+    ${pyexe} $out/bin/herb.py "\$@"
     EOF
 
-    chmod +x $out/bin/urb
+    chmod +x $out/bin/herb
   '';
 }
diff --git a/pkg/urb/urb b/pkg/herb/herb
similarity index 100%
rename from pkg/urb/urb
rename to pkg/herb/herb
diff --git a/pkg/urbit/.gitignore b/pkg/urbit/.gitignore
index 0e9e181d56..e7a58fbfcd 100644
--- a/pkg/urbit/.gitignore
+++ b/pkg/urbit/.gitignore
@@ -23,3 +23,5 @@ GRTAGS
 GTAGS
 *.swo
 *.swp
+hash_tests
+hashtable_tests
diff --git a/pkg/urbit/.travis.yml b/pkg/urbit/.travis.yml
deleted file mode 100644
index f606a2957f..0000000000
--- a/pkg/urbit/.travis.yml
+++ /dev/null
@@ -1,62 +0,0 @@
-dist: xenial
-language: node_js
-node_js:
-- 4
-
-# Uncomment me if this gets annoying
-#
-# notifications:
-#   email: false
-
-before_install:
-  # try to get pill early, so configuration errors will be quickly caught
-  - cd .travis
-  - bash check-trailing-whitespace.sh
-  - bash get-brass-pill.sh
-  - cd ..
-  - wget https://github.com/ninja-build/ninja/releases/download/v1.8.2/ninja-linux.zip
-  - unzip ninja-linux.zip
-  - sudo mv ninja /usr/bin/
-
-install:
-  # pwd: ~/urbit
-  - pip3 install --user -I meson
-
-script:
-  - meson . ./build --buildtype=debugoptimized -Dgc=true -Dprof=true
-  - cd ./build
-  - ninja
-  - ninja test
-  - sudo ninja install
-  - cd ../.travis
-  - npm install
-  - ulimit -c unlimited -S
-  - npm run -s test; bash print-core-backtrace.sh $?
-
-addons:
-  apt:
-    packages:
-    - python3
-    - python3-pip
-    - python3-setuptools
-    - python3-wheel
-    - libgmp3-dev
-    - libsigsegv-dev
-    - openssl
-    - libssl-dev
-    - libncurses5-dev
-    - gcc
-    - libcurl4-gnutls-dev
-    - unzip
-    - gdb
-# before_deploy: "make deb" # TODO
-# deploy:
-#   skip_cleanup: true
-#   provider: releases
-#   prerelease: true # turn this off for official releases
-#   api_key:
-#     secure: XX
-#   file: ./build/urbit # TODO upload package from before_deploy
-#   on:
-#     repo: urbit/urbit
-#     tags: true
diff --git a/pkg/urbit/.travis/.gitattributes b/pkg/urbit/.travis/.gitattributes
deleted file mode 100644
index c1611b63db..0000000000
--- a/pkg/urbit/.travis/.gitattributes
+++ /dev/null
@@ -1,2 +0,0 @@
-# Don't show in diffs or auto-merge
-package-lock.json binary
diff --git a/pkg/urbit/.travis/.gitignore b/pkg/urbit/.travis/.gitignore
deleted file mode 100644
index c2658d7d1b..0000000000
--- a/pkg/urbit/.travis/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-node_modules/
diff --git a/pkg/urbit/.travis/check-trailing-whitespace.sh b/pkg/urbit/.travis/check-trailing-whitespace.sh
deleted file mode 100755
index 0f636a3d93..0000000000
--- a/pkg/urbit/.travis/check-trailing-whitespace.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/usr/bin/env bash
-
-whitespace=$(
-  find .. -path ../.git        -prune -o \
-          -path ../subprojects -prune -o \
-          -type f                        \
-          -exec egrep -l " +$" {} ';'    \
-)
-
-if [ -n "$whitespace" ]
-then
-  echo 'found trailing whitespace in:';
-  echo $whitespace;
-  exit 1;
-fi
diff --git a/pkg/urbit/.travis/get-brass-pill.sh b/pkg/urbit/.travis/get-brass-pill.sh
deleted file mode 100644
index 825f6241fd..0000000000
--- a/pkg/urbit/.travis/get-brass-pill.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/bash
-set -euo pipefail
-set -x
-
-if [ ! -f ./pin-arvo-commit.txt ]; then
-  exit 0
-fi
-
-if [ ! -f ./pin-brass-pill.txt ]; then
-  echo "missing .travis/pin-brass-pill.txt"
-  exit 1
-fi
-
-PILL_NAME=$(cat ./pin-brass-pill.txt | tr -d [:space:])
-
-wget https://bootstrap.urbit.org/$PILL_NAME -O brass.pill && exit 0
-
-echo "$PILL_NAME download failed"
-exit 1
diff --git a/pkg/urbit/.travis/package-lock.json b/pkg/urbit/.travis/package-lock.json
deleted file mode 100644
index 1330fa8520..0000000000
--- a/pkg/urbit/.travis/package-lock.json
+++ /dev/null
@@ -1,753 +0,0 @@
-{
-  "name": "vere-tests",
-  "version": "1.0.0",
-  "lockfileVersion": 1,
-  "requires": true,
-  "dependencies": {
-    "ajv": {
-      "version": "5.5.2",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
-      "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
-      "requires": {
-        "co": "^4.6.0",
-        "fast-deep-equal": "^1.0.0",
-        "fast-json-stable-stringify": "^2.0.0",
-        "json-schema-traverse": "^0.3.0"
-      }
-    },
-    "array-differ": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/array-differ/-/array-differ-1.0.0.tgz",
-      "integrity": "sha1-7/UuN1gknTO+QCuLuOVkuytdQDE="
-    },
-    "array-union": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/array-union/-/array-union-1.0.2.tgz",
-      "integrity": "sha1-mjRBDk9OPaI96jdb5b5w8kd47Dk=",
-      "requires": {
-        "array-uniq": "^1.0.1"
-      }
-    },
-    "array-uniq": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
-      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY="
-    },
-    "arrify": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/arrify/-/arrify-1.0.1.tgz",
-      "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0="
-    },
-    "asap": {
-      "version": "2.0.6",
-      "resolved": "https://registry.npmjs.org/asap/-/asap-2.0.6.tgz",
-      "integrity": "sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY="
-    },
-    "asn1": {
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-      "resolved": "https://registry.npmjs.org/recursive-copy/-/recursive-copy-2.0.9.tgz",
-      "integrity": "sha512-0AkHV+QtfS/1jW01z3m2t/TRTW56Fpc+xYbsoa/bqn8BCYPwmsaNjlYmUU/dyGg9w8MmGoUWihU5W+s+qjxvBQ==",
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-        "extend": "~3.0.2",
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-        "form-data": "~2.3.2",
-        "har-validator": "~5.1.0",
-        "http-signature": "~1.2.0",
-        "is-typedarray": "~1.0.0",
-        "isstream": "~0.1.2",
-        "json-stringify-safe": "~5.0.1",
-        "mime-types": "~2.1.19",
-        "oauth-sign": "~0.9.0",
-        "performance-now": "^2.1.0",
-        "qs": "~6.5.2",
-        "safe-buffer": "^5.1.2",
-        "tough-cookie": "~2.4.3",
-        "tunnel-agent": "^0.6.0",
-        "uuid": "^3.3.2"
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-      "dependencies": {
-        "extend": {
-          "version": "3.0.2",
-          "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
-          "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g=="
-        }
-      }
-    },
-    "rimraf": {
-      "version": "2.6.2",
-      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
-      "integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
-      "requires": {
-        "glob": "^7.0.5"
-      }
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-    "rx": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/rx/-/rx-4.1.0.tgz",
-      "integrity": "sha1-pfE/957zt0D+MKqAP7CfmIBdR4I="
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-    "safe-buffer": {
-      "version": "5.1.2",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
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-      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
-      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
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-      "resolved": "https://registry.npmjs.org/slash/-/slash-1.0.0.tgz",
-      "integrity": "sha1-xB8vbDn8FtHNF61LXYlhFK5HDVU="
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-      "resolved": "https://registry.npmjs.org/split/-/split-1.0.1.tgz",
-      "integrity": "sha512-mTyOoPbrivtXnwnIxZRFYRrPNtEFKlpB2fvjSnCQUiAA6qAZzqwna5envK4uk6OIeP17CsdF3rSBGYVBsU0Tkg==",
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-        "getpass": "^0.1.1",
-        "jsbn": "~0.1.0",
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-    "stream-snitch": {
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-      "resolved": "https://registry.npmjs.org/stream-snitch/-/stream-snitch-0.0.3.tgz",
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-      "version": "2.0.2",
-      "resolved": "http://registry.npmjs.org/topo/-/topo-2.0.2.tgz",
-      "integrity": "sha1-zVYVdSU5BXwNwEkaYhw7xvvh0YI=",
-      "requires": {
-        "hoek": "4.x.x"
-      }
-    },
-    "tough-cookie": {
-      "version": "2.4.3",
-      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
-      "integrity": "sha512-Q5srk/4vDM54WJsJio3XNn6K2sCG+CQ8G5Wz6bZhRZoAe/+TxjWB/GlFAnYEbkYVlON9FMk/fE3h2RLpPXo4lQ==",
-      "requires": {
-        "psl": "^1.1.24",
-        "punycode": "^1.4.1"
-      }
-    },
-    "tunnel-agent": {
-      "version": "0.6.0",
-      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
-      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
-      "requires": {
-        "safe-buffer": "^5.0.1"
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-    "tweetnacl": {
-      "version": "0.14.5",
-      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
-      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
-    },
-    "urbit-runner": {
-      "version": "github:urbit/runner-js#ee2455015dc4ea243d0e0ec623975632c9249c4e",
-      "from": "github:urbit/runner-js#ee24550",
-      "requires": {
-        "colors": "^1.1.2",
-        "escape-string-regexp": "^1.0.5",
-        "once": "^1.4.0",
-        "promise-streams": "^2.1.1",
-        "pty.js": "^0.3.1",
-        "recursive-copy": "^2.0.7",
-        "split": "^1.0.1",
-        "stream-snitch": "0.0.3",
-        "wait-on": "^2.0.2"
-      }
-    },
-    "uuid": {
-      "version": "3.3.2",
-      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
-      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA=="
-    },
-    "verror": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
-      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
-      "requires": {
-        "assert-plus": "^1.0.0",
-        "core-util-is": "1.0.2",
-        "extsprintf": "^1.2.0"
-      }
-    },
-    "wait-on": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/wait-on/-/wait-on-2.1.2.tgz",
-      "integrity": "sha512-Jm6pzZkbswtcRUXohxY1Ek5MrL16AwHj83drgW2FTQuglHuhZhVMyBLPIYG0rL1wvr5rdC1uzRuU/7Bc+B9Pwg==",
-      "requires": {
-        "core-js": "^2.4.1",
-        "joi": "^9.2.0",
-        "minimist": "^1.2.0",
-        "request": "^2.78.0",
-        "rx": "^4.1.0"
-      },
-      "dependencies": {
-        "minimist": {
-          "version": "1.2.0",
-          "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
-          "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
-        }
-      }
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-    "wrappy": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
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-}
diff --git a/pkg/urbit/.travis/package.json b/pkg/urbit/.travis/package.json
deleted file mode 100644
index a5e7e46f07..0000000000
--- a/pkg/urbit/.travis/package.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "name": "vere-tests",
-  "version": "1.0.0",
-  "description": "Test harness for the Urbit runtime",
-  "scripts": {
-    "test": "node test.js"
-  },
-  "private": true,
-  "author": "~fyr",
-  "license": "MIT",
-  "dependencies": {
-    "urbit-runner": "github:urbit/runner-js#ee24550"
-  }
-}
diff --git a/pkg/urbit/.travis/pin-brass-pill.txt b/pkg/urbit/.travis/pin-brass-pill.txt
deleted file mode 100644
index 199f0023a1..0000000000
--- a/pkg/urbit/.travis/pin-brass-pill.txt
+++ /dev/null
@@ -1 +0,0 @@
-urbit-0.7.2.brass.pill
diff --git a/pkg/urbit/.travis/print-core-backtrace.sh b/pkg/urbit/.travis/print-core-backtrace.sh
deleted file mode 100644
index 52b4215257..0000000000
--- a/pkg/urbit/.travis/print-core-backtrace.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/bash
-set -euo pipefail
-set -x
-
-RESULT=$1
-
-if [[ ${RESULT} -eq 0 ]]; then
-  exit 0
-else
-  for i in $(find ./ -maxdepth 1 -name 'core*' -print)
-  do
-    gdb urbit core* -ex "thread apply all bt" -ex "set pagination 0" -batch
-  done
-fi
-
-echo "build failed with status code $RESULT"
-exit $RESULT
diff --git a/pkg/urbit/.travis/test.js b/pkg/urbit/.travis/test.js
deleted file mode 100644
index 56251fe10c..0000000000
--- a/pkg/urbit/.travis/test.js
+++ /dev/null
@@ -1,68 +0,0 @@
-'use strict';
-
-var fs      = require('fs')
-var runner  = require('urbit-runner')
-var Urbit   = runner.Urbit;
-var ERROR   = runner.ERROR;
-var actions = runner.actions
-
-var args =
-  (function() {
-    var commit;
-
-    try {
-      commit = fs.readFileSync('./pin-arvo-commit.txt', 'utf-8');
-    }
-    catch (e) {
-      return ['-cgSF', 'zod', '-B', 'brass.pill', 'zod'];
-    }
-
-    var hash = commit.slice(0, 10);
-    var pill = 'https://bootstrap.urbit.org/git-' + hash + '.pill';
-    return ['-u', pill, '-cgPSF', 'zod', 'zod'];
-  })();
-
-var urbit = new Urbit(args);
-
-// vere hangs (always?) with run in travis-ci with -P
-// so we send ^Z if we hang for ~s30
-function exit() {
-  setTimeout(function(){
-    urbit.pty.write('\x1a');
-    urbit.pty.on('exit', function(code, signal){
-      process.exit(0);
-    })
-  }, 30 * 1000);
-
-  return urbit.exit(0);
-}
-
-Promise.resolve(urbit)
-//  XX temporary
-//  send ctrl-x to select dojo
-//
-.then(function(){
-  return urbit.expect(/talk\[\] /)
-  .then(function() {
-    return urbit.pty.write("\x18")
-  })
-  .then(function() { return urbit })
-})
-.then(actions.safeBoot)
-.then(actions.test)
-.then(function(){
-  return urbit.line("|mass")
-  .then(function(){
-    return urbit.expectEcho("%ran-mass")
-    .then(function(){ return urbit.resetListeners(); })
-  })
-})
-.then(exit)
-.catch(function(err){
-  // we still exit 0, Arvo errors are not our fault ...
-  return urbit.waitSilent()
-  .then(function(){
-    return urbit.warn("Arvo test aborted:", err);
-  })
-  .then(exit);
-});
diff --git a/pkg/urbit/Makefile b/pkg/urbit/Makefile
index fb4c1b2be7..10c65555d1 100644
--- a/pkg/urbit/Makefile
+++ b/pkg/urbit/Makefile
@@ -15,23 +15,36 @@ worker_objs = $(shell echo $(worker) | sed 's/\.c/.o/g')
 
 all_objs = $(common_objs) $(daemon_objs) $(worker_objs)
 all_srcs = $(common) $(daemon) $(worker)
+all_exes = ./hash_tests ./hashtable_tests ./urbit ./urbit-worker
 
 ################################################################################
 
-.PHONY: all clean mkproper
+.PHONY: all test clean mkproper
 
 ################################################################################
 
-all: urbit urbit-worker
+all: urbit urbit-worker hashtable_tests hash_tests
+
+test: hashtable_tests hash_tests
+	./hashtable_tests
+	./hash_tests
 
 clean:
-	rm -f $(all_objs) ./urbit ./urbit-worker ./tags
+	rm -f ./tags $(all_objs) $(all_exes)
 
 mrproper: clean
 	rm -f config.mk include/config.h
 
 ################################################################################
 
+hashtable_tests: $(common_objs) tests/hashtable_tests.o
+	@echo CC -o $@
+	@$(CC) $^ $(LDFLAGS) -o $@
+
+hash_tests: $(common_objs) tests/hash_tests.o
+	@echo CC -o $@
+	@$(CC) $^ $(LDFLAGS) -o $@
+
 urbit: $(common_objs) $(daemon_objs)
 	@echo CC -o $@
 	@$(CC) $^ $(LDFLAGS) -o $@
diff --git a/pkg/urbit/debian/changelog b/pkg/urbit/debian/changelog
deleted file mode 100644
index 47cafdcfef..0000000000
--- a/pkg/urbit/debian/changelog
+++ /dev/null
@@ -1,5 +0,0 @@
-urbit (0.6-0) unstable; urgency=high
-
-  * Memory-allocation bug fix in _box_slot in Vere. Breaking change.
-
- -- Keaton Dunsford <keaton@tlon.io>  Fri, 8 Jun 2018 14:31:08 -0700
diff --git a/pkg/urbit/debian/compat b/pkg/urbit/debian/compat
deleted file mode 100644
index f599e28b8a..0000000000
--- a/pkg/urbit/debian/compat
+++ /dev/null
@@ -1 +0,0 @@
-10
diff --git a/pkg/urbit/debian/control b/pkg/urbit/debian/control
deleted file mode 100644
index 430ff65e3c..0000000000
--- a/pkg/urbit/debian/control
+++ /dev/null
@@ -1,12 +0,0 @@
-Source: urbit
-Section: net
-Priority: extra
-Maintainer: Ted Blackman <ted@tlon.io>
-Build-Depends: debhelper (>= 9), libgmp3-dev, libsigsegv-dev, openssl, libssl-dev,libtool, meson, re2c, libcurl4-gnutls-dev
-Standards-Version: 3.9.5
-Homepage: http://urbit.org
-
-Package: urbit
-Architecture: any
-Depends: libgmp3-dev, libsigsegv-dev, openssl, libcurl4-gnutls-dev
-Description: An operating function
diff --git a/pkg/urbit/debian/copyright b/pkg/urbit/debian/copyright
deleted file mode 100644
index 72fb2d7eb8..0000000000
--- a/pkg/urbit/debian/copyright
+++ /dev/null
@@ -1,27 +0,0 @@
-Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
-Upstream-Name: urbit
-Source: <http://urbit.org>
-
-Files: *
-License: MIT
- The MIT License (MIT)
- .
- Copyright (c) 2017 Urbit
- .
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- .
- The above copyright notice and this permission notice shall be included in all
- copies or substantial portions of the Software.
- .
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
diff --git a/pkg/urbit/debian/debhelper-build-stamp b/pkg/urbit/debian/debhelper-build-stamp
deleted file mode 100644
index 7d4ce33b15..0000000000
--- a/pkg/urbit/debian/debhelper-build-stamp
+++ /dev/null
@@ -1 +0,0 @@
-urbit
diff --git a/pkg/urbit/debian/docs b/pkg/urbit/debian/docs
deleted file mode 100644
index d99978a9bc..0000000000
--- a/pkg/urbit/debian/docs
+++ /dev/null
@@ -1,2 +0,0 @@
-LICENSE.txt
-README.md
diff --git a/pkg/urbit/debian/install b/pkg/urbit/debian/install
deleted file mode 100644
index 474c77259c..0000000000
--- a/pkg/urbit/debian/install
+++ /dev/null
@@ -1 +0,0 @@
-bin/urbit usr/bin
diff --git a/pkg/urbit/debian/rules b/pkg/urbit/debian/rules
deleted file mode 100755
index 3ee6d911cc..0000000000
--- a/pkg/urbit/debian/rules
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/usr/bin/make -f
-%:
-	dh $@
-
-override_dh_auto_install:
diff --git a/pkg/urbit/debian/source/format b/pkg/urbit/debian/source/format
deleted file mode 100644
index 163aaf8d82..0000000000
--- a/pkg/urbit/debian/source/format
+++ /dev/null
@@ -1 +0,0 @@
-3.0 (quilt)
diff --git a/pkg/urbit/gdb-test-hash b/pkg/urbit/gdb-test-hash
deleted file mode 100644
index d2ba41a732..0000000000
--- a/pkg/urbit/gdb-test-hash
+++ /dev/null
@@ -1,4 +0,0 @@
-file bin/test_hash
-handle SIGSEGV nostop noprint
-start
-
diff --git a/pkg/urbit/scripts/bootstrap b/pkg/urbit/scripts/bootstrap
deleted file mode 100755
index 3a8a74e560..0000000000
--- a/pkg/urbit/scripts/bootstrap
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/usr/bin/env bash
-
-git submodule init
-git submodule update
diff --git a/pkg/urbit/scripts/build b/pkg/urbit/scripts/build
deleted file mode 100755
index 879618f28d..0000000000
--- a/pkg/urbit/scripts/build
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/usr/bin/env bash
-
-mkdir ./build &> /dev/null
-meson . ./build --buildtype=release "$@"
-ninja -C build
diff --git a/pkg/urbit/tests/test.c b/pkg/urbit/tests/test.c
deleted file mode 100644
index 86a75ec038..0000000000
--- a/pkg/urbit/tests/test.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/* w/test.c
-**
-*/
-#define C3_GLOBAL
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <setjmp.h>
-#include <gmp.h>
-#include <dirent.h>
-#include <stdint.h>
-#include <uv.h>
-#include <ncurses/curses.h>
-#include <termios.h>
-#include <ncurses/term.h>
-#include <errno.h>
-
-#include "all.h"
-
-#if 1
-/* u3_walk_load(): load file or bail.
-*/
-static u3_noun
-u3_walk_load(c3_c* pas_c)
-{
-  struct stat buf_b;
-  c3_i        fid_i = open(pas_c, O_RDONLY, 0644);
-  c3_w        fln_w, red_w;
-  c3_y*       pad_y;
-
-  if ( (fid_i < 0) || (fstat(fid_i, &buf_b) < 0) ) {
-    fprintf(stderr, "%s: %s\r\n", pas_c, strerror(errno));
-    return u3m_bail(c3__fail);
-  }
-  fln_w = buf_b.st_size;
-  pad_y = c3_malloc(buf_b.st_size);
-
-  red_w = read(fid_i, pad_y, fln_w);
-  close(fid_i);
-
-  if ( fln_w != red_w ) {
-    free(pad_y);
-    return u3m_bail(c3__fail);
-  }
-  else {
-    u3_noun pad = u3i_bytes(fln_w, (c3_y *)pad_y);
-    free(pad_y);
-
-    return pad;
-  }
-}
-#endif
-
-#if 0
-static c3_w*
-_test_walloc(c3_w siz_w)
-{
-  c3_w *ptr_w = u3a_walloc(siz_w);
-  c3_w i_w;
-
-  c3_assert(siz_w >= 1);
-  *ptr_w = siz_w;
-
-  for ( i_w = 1; i_w < siz_w; i_w++ ) {
-    ptr_w[i_w] = u3r_mug((0xffff & (c3_p)(ptr_w)) + i_w);
-  }
-  return ptr_w;
-}
-
-static void
-_test_free(c3_w* ptr_w)
-{
-  c3_w i_w, siz_w = *ptr_w;
-
-  for ( i_w = 1; i_w < siz_w; i_w++ ) {
-    c3_assert(ptr_w[i_w] == u3r_mug((0xffff & (c3_p)(ptr_w)) + i_w));
-  }
-  u3a_free(ptr_w);
-}
-
-#define NUM 16384
-
-// Simple allocation test.
-//
-void
-test(void)
-{
-  c3_w* one_w[NUM];
-  c3_w* two_w[NUM];
-  c3_w  i_w;
-
-  for ( i_w = 0; i_w < NUM; i_w++ ) {
-    c3_w siz_w = c3_max(1, u3r_mug(i_w) & 0xff);
-
-    one_w[i_w] = _test_walloc(siz_w);
-    two_w[i_w] = _test_walloc(siz_w);
-  }
-  _road_sane();
-
-  for ( i_w = 0; i_w < NUM; i_w++ ) {
-    _test_free(two_w[NUM - (i_w + 1)]);
-    _road_sane();
-  }
-  for ( i_w = 0; i_w < NUM; i_w++ ) {
-    c3_w siz_w = c3_max(1, u3r_mug(i_w + 1) & 0xff);
-
-    two_w[i_w] = _test_walloc(siz_w);
-    _road_sane();
-  }
-
-  for ( i_w = 0; i_w < NUM; i_w++ ) {
-    _test_free(one_w[NUM - (i_w + 1)]);
-    _road_sane();
-  }
-  for ( i_w = 0; i_w < NUM; i_w++ ) {
-    c3_w siz_w = c3_max(1, u3r_mug(i_w + 2) & 0xff);
-
-    one_w[i_w] = _test_walloc(siz_w);
-    _road_sane();
-  }
-
-  for ( i_w = 0; i_w < NUM; i_w++ ) {
-    _test_free(one_w[NUM - (i_w + 1)]);
-    _road_sane();
-  }
-  for ( i_w = 0; i_w < NUM; i_w++ ) {
-    _test_free(two_w[NUM - (i_w + 1)]);
-    _road_sane();
-  }
-
-  printf("allocations %d, iterations %d\n", ALL_w, ITE_w);
-}
-#endif
-
-#if 1
-static void
-_test_hash(void)
-{
-  // u3m_dump();
-  {
-    u3h_root* har_u = u3h_new();
-    c3_w        i_w;
-    c3_w        max_w = (1 << 20);
-
-    for ( i_w = 0; i_w < max_w; i_w++ ) {
-      u3_noun key = u3nc(0, i_w);
-
-      u3h_put(har_u, key, (i_w + 1));
-      u3z(key);
-    }
-    for ( i_w = 0; i_w < max_w; i_w++ ) {
-      u3_noun key = u3nc(0, i_w);
-      u3_noun val = u3h_get(har_u, key);
-
-      if ( val != (i_w + 1) ) {
-        if ( u3_none == val ) {
-          printf("at %d, nothing\n", i_w);
-        }
-        else printf("at %d, oddly, is %d\n", i_w, val);
-        c3_assert(0);
-      }
-      u3z(key);
-    }
-    u3h_free(har_u);
-  }
-  // u3m_dump();
-}
-#endif
-
-#if 1
-static void
-_test_jam(void)
-{
-  // u3m_dump();
-  {
-    u3_noun pil = u3_walk_load("urb/urbit.pill");
-    u3_noun cue, jam;
-
-    printf("cueing pill - %d bytes\n", u3r_met(3, pil));
-    cue = u3ke_cue(pil);
-    printf("cued - mug %x\n", u3r_mug(cue));
-
-#if 1
-    jam = u3ke_jam(cue);
-    printf("jammed - %d bytes\n", u3r_met(3, jam));
-    cue = u3ke_cue(jam);
-    printf("cued - mug %x\n", u3r_mug(cue));
-#endif
-
-    u3z(cue);
-  }
-  // u3m_dump();
-}
-#endif
-
-static void
-_test_leap(void)
-{
-#if 1
-  // u3m_dump();
-  {
-    u3_noun pil;
-    u3_noun cue, jam;
-    c3_w gof_w = u3m_golf();
-
-    pil = u3_walk_load("urb/urbit.pill");
-    u3m_leap(0);
-    printf("cueing pill - %d bytes\n", u3r_met(3, pil));
-    cue = u3ke_cue(pil);
-    printf("cued - %p, mug %x\n", u3a_to_ptr(cue), u3r_mug(cue));
-    u3m_fall();
-
-    cue = u3a_take(cue);
-    printf("taken - %p, mug %x\n", u3a_to_ptr(cue), u3r_mug(cue));
-    u3m_flog(gof_w);
-    u3z(pil);
-
-#if 1
-    jam = u3ke_jam(cue);
-    printf("jammed - %d bytes\n", u3r_met(3, jam));
-    cue = u3ke_cue(jam);
-    printf("cued - mug %x\n", u3r_mug(cue));
-#endif
-
-    u3z(cue);
-  }
-  // u3m_dump();
-#endif
-}
-
-static void
-_test_test(void)
-{
-  u3_noun fol = u3ke_cue(u3_walk_load("pill/west.pill"));
-  u3_noun val;
-
-  printf("test_test: formula mug %x\n", u3r_mug(fol));
-  val = u3n_nock_on(u3nc(42, 17), fol);
-  printf("val %d\n", val);
-  u3z(val);
-}
-
-int FOO;
-
-// A simple memory tester.
-//
-int
-main(int argc, char *argv[])
-{
-  printf("hello, world: len %dMB\n", (1 << U3_OS_LoomBits) >> 18);
-  // _test_words();
-
-  u3m_init();
-  u3m_pave(c3y, c3n);
-  // u3j_boot();
-
-  // u3m_dump();
-
-  printf("booted.\n");
-
-  {
-    _test_leap();
-    // _test_hash();
-    // _test_jam();
-  }
-  // u3m_clear();
-
-  // u3m_dump();
-}
diff --git a/sh/load-arvo b/sh/load-arvo
index 2c21aadb40..674f62e59d 100755
--- a/sh/load-arvo
+++ b/sh/load-arvo
@@ -10,12 +10,12 @@ ship=$1
 test -d $ship/.urb
 test -f $ship/.vere.lock
 
-urb $ship -p hood -d '+hood/autoload |'
+herb $ship -p hood -d '+hood/autoload |'
 
-urb $ship -p hood -d "+hood/mount %"
+herb $ship -p hood -d "+hood/mount %"
 
 rm -r $ship/home
 
 cp -r pkg/arvo $ship/home
 
-urb $ship -p hood -d "+hood/commit %home"
+herb $ship -p hood -d "+hood/commit %home"