"NO"
(\x -> x)

:m +Text.Show.Functions
"YES"
(\x -> x)

:m -Text.Show.Functions
"NO"
(\x -> x)

:load T2182ghci_A
"YES"
(\x -> x)
T

:m -T2182ghci_A
"NO"
(\x -> x)

:load T2182ghci_B
"YES"
(\x -> x)
T

:m -T2182ghci_B
"NO"
(\x -> x)

:load T2182ghci_C
"YES"
(\x -> x)
T

:m -T2182ghci_C
:load T2182ghci_A
:load T2182ghci_B
"YES"
(\x -> x)
T

:m -T2182ghci_A
"YES"
(\x -> x)
T

:m -T2182ghci_B
"NO"
(\x -> x)