I am having trouble installing some software

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checking for CRYPTO... no configure: error: Package requirements (nss) were not met:

Package 'nss', required by 'virtual:world', not found

Consider adjusting the PKGCONFIGPATH environment variable if you installed software in a non-standard prefix.

Alternatively, you may set the environment variables CRYPTOCFLAGS and CRYPTOLIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.