[Bug 2001556] Re: systemd-cryptenroll poorly communicates libtss2-rc0 dependency

[Nick Rosbrook]

I think the current log levels and messages are appropriate, so marking
this won't fix.

** Changed in: systemd (Ubuntu)
       Status: Triaged => Won't Fix

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Title:
  systemd-cryptenroll poorly communicates libtss2-rc0 dependency

Status in systemd package in Ubuntu:
  Won't Fix

Bug description:
  Description:

  tpm2 support was added to jammy in 249.11-0ubuntu3.3 via LP1969375.
  libtss2-rc0 was added as a suggested package.

  $ systemd-cryptenroll --tpm2-device=list
  TPM2 support is not installed.

  Installing libtss2-rc0 allows this to resolve:
  $ sudo apt install libtss2-rc0
  $ systemd-cryptenroll --tpm2-device=list
  PATH        DEVICE      DRIVER
  /dev/tpmrm0 VTPM0101:00 tpm_crb

  While this isn't inherently an issue, two things are notable:

  + The manpage for systemd-cryptenroll makes no mention that the
  suggested package needs to be installed (that I could find), this is
  only noted via `apt depends`. I only happened to find this while
  building from source.

  + The presented error implies that the pkg was build with -Dtpm2=false
  (as I read it), which is not actually the case. It should properly
  indicate the missing dep.

  The choice to leave this as a suggested dep was deliberate, so I
  believe resolution of the above two issues would suffice to provide
  enduser clarity.

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