diff --git a/build-all.xsh b/build-all.xsh
new file mode 100755
index 0000000..170087f
--- /dev/null
+++ b/build-all.xsh
@@ -0,0 +1,61 @@
+#! /usr/bin/env nix-shell
+#! nix-shell -i xonsh -p xonsh rustup cargo-zigbuild zig
+# 
+# vim: ts=4 sw=4 et
+#
+# If the shebang line above was necessary, you probably should have used
+# the flake, instead. But that's okay! You're valid. <3
+#
+""" Lix installer generation script.
+
+"""
+
+import sys
+import xonsh
+import functools
+
+# Ensure we fail if any of our subcommands do.
+$RAISE_SUBPROC_ERROR=True
+
+# Specify the platforms we want to build for.
+TARGET_PLATFORMS = [
+    "aarch64-apple-darwin",
+    "x86_64-apple-darwin",
+    "x86_64-unknown-linux-musl",
+    "aarch64-unknown-linux-musl",
+]
+
+# Create an alias for printing to stderr.
+printerr = functools.partial(print, file=sys.stderr)
+
+# Platform helpers.
+IS_MACOS = not (xonsh.tools.ON_LINUX or xonsh.tools.ON_WINDOWS)
+
+# Until our flake ships this with osxcross, we'll have to run this on macOS.
+if not IS_MACOS:
+    printerr("This currently must be run from macOS due to cross-compile wonk. Sorry :(.")
+    sys.exit(-1)
+
+
+# Pre-flight check: ensure we have all the rustup platforms we need.
+all_targets_present = True
+for platform in TARGET_PLATFORMS:
+    if platform not in $(rustup target list --installed):
+        printerr(f"ERROR: You don't have a rustup toolchain for {platform}! Install it with `rustup target add {platform}`")
+        all_targets_present = False
+        
+if not all_targets_present:
+    printerr("Failing out; install the platforms above and retry.")
+    sys.exit(-2)
+
+# Build for each of our platforms.
+printerr("> Building any platforms that need updating.")
+for platform in TARGET_PLATFORMS:
+
+    # Build... 
+    printerr(f"> Building for target {platform}")
+    cargo zigbuild --quiet --release --target=@(platform)
+
+    # ... and copy the output to the "results" directory.
+    mkdir -p ./results
+    cp target/@(platform)/release/lix-installer ./results/lix-installer-@(platform)
diff --git a/enter-env.sh b/enter-env.sh
deleted file mode 100755
index 16ef28a..0000000
--- a/enter-env.sh
+++ /dev/null
@@ -1,99 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -p vault awscli2 jq -i bash
-# shellcheck shell=bash
-
-set +x # don't leak secrets!
-set -eu
-umask 077
-
-scriptroot=$(dirname "$(realpath "$0")")
-scratch=$(mktemp -d -t tmp.XXXXXXXXXX)
-
-vault token lookup &>/dev/null || {
-  echo "You're not logged in to vault! Exiting."
-  exit 1
-}
-
-function finish {
-  set +e
-  rm -rf "$scratch"
-  if [ "${VAULT_EXIT_ACCESSOR:-}" != "" ]; then
-    if vault token lookup &>/dev/null; then
-        echo "--> Revoking my token..." >&2
-        vault token revoke -self
-    fi
-  fi
-  set -e
-}
-trap finish EXIT
-
-assume_role() {
-  role=$1
-  echo "--> Assuming role: $role" >&2
-  vault_creds=$(vault token create \
-    -display-name="$role" \
-    -format=json \
-    -role "$role")
-
-  VAULT_EXIT_ACCESSOR=$(jq -r .auth.accessor <<<"$vault_creds")
-  export VAULT_TOKEN
-  VAULT_TOKEN=$(jq -r .auth.client_token <<<"$vault_creds")
-}
-
-function provision_aws_creds() {
-  url="$1"
-  local ok=
-  echo "--> Setting AWS variables: " >&2
-  echo "                       AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN" >&2
-
-  aws_creds=$(vault kv get -format=json "$url")
-  export AWS_ACCESS_KEY_ID
-  AWS_ACCESS_KEY_ID=$(jq -r .data.access_key <<<"$aws_creds")
-  export AWS_SECRET_ACCESS_KEY
-  AWS_SECRET_ACCESS_KEY=$(jq -r .data.secret_key <<<"$aws_creds")
-  export AWS_SESSION_TOKEN
-  AWS_SESSION_TOKEN=$(jq -r .data.security_token <<<"$aws_creds")
-  if [ -z "$AWS_SESSION_TOKEN" ] ||  [ "$AWS_SESSION_TOKEN" == "null" ]; then
-    unset AWS_SESSION_TOKEN
-  fi
-
-  echo "--> Preflight testing the AWS credentials..." >&2
-  for _ in {0..20}; do
-    if check_output=$(aws sts get-caller-identity 2>&1 >/dev/null); then
-        ok=1
-        break
-    else
-        echo -n "." >&2
-        sleep 1
-    fi
-  done
-  if [[ -z "$ok" ]]; then
-    echo $'\nPreflight test failed:\n'"$check_output" >&2
-    return 1
-  fi
-  echo
-  unset aws_creds
-}
-
-assume_role "internalservices_nix_installer_developer"
-provision_aws_creds "internalservices/aws/creds/nix_installer"
-
-if [ "${1:-}" == "" ]; then
-    cat <<\BASH > "$scratch/bashrc"
-expiration_ts=$(date +%s -d "$(vault token lookup -format=json | jq -r '.data.expire_time')")
-vault_prompt() {
-  local remaining=$(( $expiration_ts - $(date '+%s')))
-  if [[ "$remaining" -lt 1 ]]; then
-    remaining=expired
-    printf '\n\e[01;33mtoken expired\e[m';
-    return
-  fi
-  printf '\n\e[01;32mTTL:%ss\e[m' "$remaining"
-}
-PROMPT_COMMAND=vault_prompt
-BASH
-
-    bash --init-file "$scratch/bashrc"
-else
-    "$@"
-fi