generalize mygvm

zsh/mygvm

@@ -1,5 +1,14 @@
 #!/bin/bash
 
+uname_m=$(uname -m)
+goarch='amd64'
+if [[ $uname_m == 'arm64' || $uname_m == 'aarch64' ]]; then
+    goarch='arm64'
+fi
+goos='linux'
+if [[ $(uname) == 'Darwin' ]]; then
+    goos='darwin'
+fi
 valid='false'
 exists='false'
 list_versions() {
@@ -17,13 +26,13 @@ install_version() {
         exit 1
     fi
 
-    fname="$HOME/.go/downloads/$1.darwin-arm64.tar.gz"
+    fname="$HOME/.go/downloads/$1.$goos-$goarch.tar.gz"
 
     if [[ ! -f $fname ]]; then
-        curl -Lo $fname https://dl.google.com/go/$1.darwin-arm64.tar.gz
+        curl -Lo $fname https://dl.google.com/go/$1.$goos-$goarch.tar.gz
     fi
     cd $HOME/.go/downloads
-    tar -zxf $1.darwin-arm64.tar.gz
+    tar -zxf $1.$goos-$goarch.tar.gz
     mv go/ ../$1
     check_exists $1
     link_version $1