diff --git a/projects/go.dev/package.yml b/projects/go.dev/package.yml
index aba07ab2..b41c02b1 100644
--- a/projects/go.dev/package.yml
+++ b/projects/go.dev/package.yml
@@ -22,9 +22,8 @@ build:
     curl.se: '*'
     nixos.org/patchelf: ^0.15
   script: |-
-    export GOROOT_BOOTSTRAP="$(cd ../.. && echo $PWD)/bootstrap"
-    if test ! -d $GOROOT_BOOTSTRAP; then
-      # TODO something better than this...
+    export GOROOT_BOOTSTRAP="$(dirname "{{prefix}}")/bootstrap"
+    if test ! -d "$GOROOT_BOOTSTRAP"; then
       case "X{{ hw.target }}" in
       "Xaarch64-apple-darwin") GOARCH="darwin-arm64";;
       "Xx86_64-apple-darwin") GOARCH="darwin-amd64";;
@@ -35,22 +34,20 @@ build:
         exit 1
       esac
 
-      curl -L https://storage.googleapis.com/golang/go1.16.${GOARCH}.tar.gz | tar xzf - -C ../..
-      mv ../../go ../../bootstrap
+      curl -L https://storage.googleapis.com/golang/go1.16.${GOARCH}.tar.gz | tar xzf - -C "$GOROOT_BOOTSTRAP" --strip-components=1
     fi
 
-    export GOROOT_FINAL="{{ prefix }}"
+    export GOROOT_FINAL="{{prefix}}"
     cd src
     ./make.bash
 
     # cleanup
-    cd ../..
-    mv src foo
-    mv foo/* .
-    rmdir foo
+    cd ..
     rm src/*.{bash,bat,rc}
     rm src/Make.dist
-    find . -mindepth 1 -maxdepth 1 -type f -delete -not -name build.sh
+    mkdir "{{prefix}}"
+    mv * "{{prefix}}"
+    find "{{prefix}}" -mindepth 1 -maxdepth 1 -type f -delete -not -name build.sh
 
 test:
   script: |
diff --git a/scripts/bottle.ts b/scripts/bottle.ts
index b0ab332f..a9b1ffbe 100755
--- a/scripts/bottle.ts
+++ b/scripts/bottle.ts
@@ -20,7 +20,6 @@ import { encode } from "deno/encoding/hex.ts"
 import Path from "path"
 
 const cellar = useCellar()
-const filesListName = 'files.txt'
 
 
 //-------------------------------------------------------------------------- main
@@ -37,10 +36,6 @@ if (import.meta.main) {
     const installation = await cellar.resolve(pkg)
     const path = await bottle(installation)
     const checksum = await sha256(path)
-    artifacts.push(installation.path.join(filesListName))
-
-    if (!path) throw new Error("wtf: bottle already exists")
-    if (!checksum) throw new Error("failed to compute checksum")
 
     console.log({ bottled: { path } })
 
@@ -66,71 +61,17 @@ if (import.meta.main) {
 
 //------------------------------------------------------------------------- funcs
 export async function bottle({ path: kegdir, pkg }: Installation): Promise<Path> {
-
-  const files = await walk(kegdir, path => {
-    /// HACK: `go` requires including the `src` dir
-    const isGo = kegdir.string.match(/\/go.dev\//)
-    switch (path.relative({ to: kegdir })) {
-    case 'src':
-      return isGo ? 'accumulate' : 'skip'
-    case 'build.sh':
-    case filesListName:
-      return 'skip'
-    default:
-      return 'accumulate'
-    }
-  })
-  const relativePaths = files.map(x => x.relative({ to: usePrefix() }))
-  const filelist = kegdir
-    .join(filesListName)
-    .write({
-      text: relativePaths.join("\n"),
-      force: true
-    })
   const tarball = useCache().bottle(pkg)
-
-  await run({
-    cmd: [
-      "tar", "zcf", tarball, "--files-from", filelist
-    ],
-    cwd: usePrefix()
-  })
-
+  const cwd = usePrefix()
+  const cmd = ["tar", "zcf", tarball, kegdir.relative({ to: cwd })]
+  await run({ cmd, cwd })
   return tarball
 }
 
-// using our own because of: https://github.com/denoland/deno_std/issues/1359
-// but frankly this also is more suitable for our needs here
-type Continuation = 'accumulate' | 'skip'
-
-export async function walk(root: Path, body: (entry: Path) => Continuation): Promise<Path[]> {
-  const rv: Path[] = []
-  const stack: Path[] = [root]
-
-  do {
-    root = stack.pop()!
-    for await (const [path, entry] of root.ls()) {
-      switch (body(path)) {
-      case 'accumulate':
-        if (entry.isDirectory) {
-          stack.push(path)
-        } else {
-          rv.push(path)
-        }
-        break
-      case 'skip':
-        continue
-      }
-    }
-  } while (stack.length > 0)
-
-  return rv
-}
-
 async function sha256(file: Path): Promise<Path> {
   const sha = await Deno.open(file.string, { read: true })
     .then(file => crypto.subtle.digest("SHA-256", file.readable))
     .then(buf => new TextDecoder().decode(encode(new Uint8Array(buf))))
   const text = `${sha}  ${file.basename()}`
-  return new Path(`${file}.sha256sum`).write({ text })
+  return new Path(`${file}.sha256sum`).write({ text, force: true })
 }
diff --git a/scripts/build/build.ts b/scripts/build/build.ts
index 6cac1c77..abe8e50a 100644
--- a/scripts/build/build.ts
+++ b/scripts/build/build.ts
@@ -2,7 +2,7 @@ import { useSourceUnarchiver, useCellar, usePantry, useCache, usePrefix } from "
 import { link, hydrate } from "prefab"
 import { Installation, Package } from "types"
 import useShellEnv, { expand } from "hooks/useShellEnv.ts"
-import { run, undent, host } from "utils"
+import { run, undent, host, pkg_str } from "utils"
 import fix_pkg_config_files from "./fix-pkg-config-files.ts"
 import fix_linux_rpaths from "./fix-linux-rpaths.ts"
 import Path from "path"
@@ -16,7 +16,7 @@ export default async function _build(pkg: Package) {
   const [deps, wet] = await calc_deps()
   await clean()
   const env = await mkenv()
-  const dst = cellar.mkpath(pkg)
+  const dst = cellar.keg(pkg)
   const src = await fetch_src(pkg)
   const installation = await build()
   await link(installation)
@@ -37,11 +37,9 @@ export default async function _build(pkg: Package) {
 
   async function clean() {
     const installation = await should_clean()
-    if (!installation) return
-    console.log({ cleaning: installation.path })
-    for await (const [path, {name}] of installation.path.ls()) {
-      if (name == 'src') continue
-      path.rm({ recursive: true })
+    if (installation) {
+      console.log({ cleaning: installation.path })
+      installation.path.rm({ recursive: true })
     }
 
     async function should_clean() {
@@ -61,7 +59,7 @@ export default async function _build(pkg: Package) {
     const env = await useShellEnv([...deps.runtime, ...deps.build])
 
     if (env.pending.length) {
-      console.error({uninstalled: env.pending})
+      console.error({uninstalled: env.pending.map(pkg_str)})
       throw new Error("uninstalled")
     }
 
@@ -75,7 +73,7 @@ export default async function _build(pkg: Package) {
   async function build() {
     const sh = await pantry.getScript(pkg, 'build')
 
-    const cmd = dst.join("build.sh").write({ force: true, text: undent`
+    const cmd = src.parent().join("build.sh").write({ force: true, text: undent`
       #!/bin/bash
 
       set -e
@@ -110,15 +108,10 @@ export default async function _build(pkg: Package) {
 }
 
 async function fetch_src(pkg: Package): Promise<Path> {
-  const dstdir = cellar.mkpath(pkg).join("src")
+  const dstdir = usePrefix().join(pkg.project, "src", `v${pkg.version}`)
   const { url, stripComponents } = await pantry.getDistributable(pkg)
-  const { download } = useCache()
-  const zip = await download({ pkg, url, type: 'src' })
-  await useSourceUnarchiver().unarchive({
-    dstdir,
-    zipfile: zip,
-    stripComponents
-  })
+  const zipfile = await useCache().download({ pkg, url, type: 'src' })
+  await useSourceUnarchiver().unarchive({ dstdir, zipfile, stripComponents })
   return dstdir
 }