nixos-anywhere: support run0

Author: Enzime

src/get-facts.sh

@@ -16,6 +16,7 @@ hasTar=$(has tar)
 hasCpio=$(has cpio)
 hasSudo=$(has sudo)
 hasDoas=$(has doas)
+hasRun0=$(has run0)
 hasWget=$(has wget)
 hasCurl=$(has curl)
 hasSetsid=$(has setsid)

src/nixos-anywhere.sh

@@ -54,6 +54,7 @@ hasTar=
 hasCpio=
 hasSudo=
 hasDoas=
+hasRun0=
 hasWget=
 hasCurl=
 hasSetsid=
@@ -528,7 +529,7 @@ importFacts() {
 
   # Necessary to prevent Bash erroring before printing out which fact had an issue
   set +u
-  for var in isOs isArch isInstaller isContainer isRoot hasIpv6Only hasTar hasCpio hasSudo hasDoas hasWget hasCurl hasSetsid; do
+  for var in isOs isArch isInstaller isContainer isRoot hasIpv6Only hasTar hasCpio hasSudo hasDoas hasRun0 hasWget hasCurl hasSetsid; do
     if [[ -z ${!var} ]]; then
       abort "Failed to retrieve fact $var from host"
     fi
@@ -541,9 +542,11 @@ importFacts() {
     maybeSudo=sudo
   elif [[ ${hasDoas} == "y" ]]; then
     maybeSudo=doas
+  elif [[ ${hasRun0} == "y" ]]; then
+    maybeSudo=run0
   else
     # shellcheck disable=SC2016
-    abort 'Unable to find a command to use to escalate privileges: Could not find `sudo` or `doas`'
+    abort 'Unable to find a command to use to escalate privileges: Could not find `sudo`, `doas` or `run0`'
   fi
 }