+#!/usr/bin/env pwsh
+
+$pkg_cmd_name = "go"
+$pkg_download = "$Env:USERPROFILE\Downloads\$Env:WEBI_PKG_FILE"
+
+$pkg_src = "$Env:USERPROFILE\.local\opt\$pkg_cmd_name-v$Env:WEBI_VERSION"
+
+$pkg_dst = "$Env:USERPROFILE\.local\opt\$pkg_cmd_name"
+$pkg_dst_cmd = "$pkg_dst\bin\$pkg_cmd_name"
+$pkg_dst_bin = "$pkg_dst\bin"
+
+# Fetch archive
+IF (!(Test-Path -Path "$pkg_download"))
+{
+ # TODO: arch detection
+ echo "Downloading $Env:PKG_NAME from $Env:WEBI_PKG_URL to $pkg_download"
+ & curl.exe -A "$Env:WEBI_UA" -fsSL "$Env:WEBI_PKG_URL" -o "$pkg_download.part"
+ & move "$pkg_download.part" "$pkg_download"
+}
+
+IF (!(Test-Path -Path "$pkg_src"))
+{
+ echo "Installing $pkg_cmd_name"
+ # TODO: temp directory
+
+ # Enter opt
+ pushd .local\tmp
+
+ # Remove any leftover tmp cruft
+ Remove-Item -Path "$pkg_cmd_name*" -Recurse -ErrorAction Ignore
+
+ # Unpack archive
+ # Windows BSD-tar handles zip. Imagine that.
+ echo "Unpacking $pkg_download"
+ & tar xf "$pkg_download"
+
+ # Settle unpacked archive into place
+ echo "New Name: $pkg_cmd_name-v$Env:WEBI_VERSION"
+ Get-ChildItem "$pkg_cmd_name*" | Select -f 1 | Rename-Item -NewName "$pkg_cmd_name-v$Env:WEBI_VERSION"
+ echo "New Location: $pkg_src"
+ Move-Item -Path "$pkg_cmd_name-v$Env:WEBI_VERSION" -Destination "$Env:USERPROFILE\.local\opt"
+
+ # Exit tmp
+ popd
+}
+
+echo "Copying into '$pkg_dst' from '$pkg_src'"
+Remove-Item -Path "$pkg_dst" -Recurse -ErrorAction Ignore
+Copy-Item -Path "$pkg_src" -Destination "$pkg_dst" -Recurse
+
+# Special to go: re-run all go tooling builds
+echo "Building go language tools..."
+echo gopls
+& "$pkg_dst_cmd" get golang.org/x/tools/gopls
+echo golint
+& "$pkg_dst_cmd" get golang.org/x/lint/golint
+echo errcheck
+& "$pkg_dst_cmd" get github.com/kisielk/errcheck
+echo gotags
+& "$pkg_dst_cmd" get github.com/jstemmer/gotags
+echo goimports
+& "$pkg_dst_cmd" get golang.org/x/tools/cmd/goimports
+echo gorename
+& "$pkg_dst_cmd" get golang.org/x/tools/cmd/gorename
+echo gotype
+& "$pkg_dst_cmd" get golang.org/x/tools/cmd/gotype
+echo stringer
+& "$pkg_dst_cmd" get golang.org/x/tools/cmd/stringer
+
+# Add to path
+& "$Env:USERPROFILE\.local\bin\pathman.exe" add %USERPROFILE%\.local\opt\go\bin
+
+# Special to go: add default GOBIN to PATH
+& "$Env:USERPROFILE\.local\bin\pathman.exe" add %USERPROFILE%\go\bin