How to use nilaway for a Golang project involved conditional compilation?

I tried running nilaway cmd for our internal project, but it failed with the following error

internal/app/xxx/domain/task.go:244:18: undefined: settings.XXXXX

settings.XXXXX is indeed defined in a source file with "//go:build $flagname" statement declared at the first line

The golangci-lint has the build-flag option while nilaway's analyzer deprecated it

user% ./nilaway --help
nilaway: Run NilAway on this package to report any possible flows of nil values to erroneous sites that our system can detect

Usage: nilaway [-flag] [package]


Flags:
  -V	print version and exit
  -all
    	no effect (deprecated)
  -c int
    	display offending line with this many lines of context (default -1)
  -cpuprofile string
    	write CPU profile to this file
  -debug string
    	debug flags, any subset of "fpstv"
  -exclude-errors-in-files string
    	A comma-separated list of file prefixes to exclude from error reporting. This takes precedence over include-errors-in-files.
  -exclude-file-docstrings value
    	Comma-separated list of docstrings to exclude from analysis
  -exclude-pkgs value
    	Comma-separated list of packages to exclude from analysis
  -fix
    	apply all suggested fixes
  -flags
    	print analyzer flags in JSON
  -include-errors-in-files string
    	A comma-separated list of file prefixes to report errors, default is current working directory. (default "/Users/tiger/Downloads/working/nilaway")
  -include-pkgs value
    	Comma-separated list of packages to analyze
  -json
    	emit JSON output
  -memprofile string
    	write memory profile to this file
  -pretty-print value
    	Pretty print the error messages
  -source
    	no effect (deprecated)
  -tags string
    	no effect (deprecated)
  -test
    	indicates whether test files should be analyzed, too (default true)
  -trace string
    	write trace log to this file
  -v	no effect (deprecated)

Any suggestion for this issue? Thanks~