https://docs.snapcraft.io/build-snaps/parts
https://wiki.ubuntu.com/snapcraft/parts

Parts

Parts are reusable components that are the main building blocks used to create snaps using Snapcraft. Parts have their own private space and lifecycle. Each part uses a plugin, which tells the part how to behave and what to do with the information inside it. Parts are analogous to a library that you would call in your program. There are three types of parts:

• Parts that use local files on your machine. For example:

     parts:
       hello:
         plugin: nodejs
           source: .
  
  

• Parts from online sources, such as git , bzr , a tarball, or any code repository you like. For example:

    parts:
      godd:
       plugin: go
        source: https://github.com/mvo5/godd.git
      gnu-hello:
       plugin: autotools
        source: http://ftp.gnu.org/gnu/hello/hello-2.10.tar.gz
  
  

• Parts built and shared by others through the parts repository . For example, using a part for curl defined in this repository:

    parts:
        client:
           plugin: autotools
           source: .
           after: [curl]
  

以下是当前 Ubuntu 官方提供的几个 TPM 2.0 开发组件

origin: https://git.launchpad.net/~snappy-hwe-team/snappy-hwe-snaps/+git/tpm2
origin-type: git
maintainer: Canonical System Enablement <[email protected]>
description:
  Part containing utilities to interact with a TPM 2.0 chip being part of
  a computer system.
parts: [tpm2-tools]

origin: https://git.launchpad.net/~snappy-hwe-team/snappy-hwe-snaps/+git/tpm2
origin-type: git
maintainer: Canonical System Enablement <[email protected]>
description:
  Implementation of the TPM 2.0 Software Stack (TSS).
  See https://github.com/01org/TPM2.0-TSS for the upstream project
  provided by this part and https://code.launchpad.net/~snappy-hwe-team/snappy-hwe-snaps/+git/tpm2/
  for the actual source code of this part.
parts: [tpm2-tss]

origin: https://git.launchpad.net/~checkbox-dev/plainbox-provider-tpm2/+git/plainbox-provider-tpm2-parts
origin-type: git
maintainer: Checkbox Developers <[email protected]>
description:
  Tests to certify the correct functioning of TPM2 devices
parts: [plainbox-provider-tpm2]

TPM 1.2 组件

#origin: https://git.launchpad.net/~snappy-hwe-team/snappy-hwe-snaps/+git/tpm
origin: https://git.launchpad.net/~joetalbott/snappy-hwe-snaps/
origin-type: git
maintainer: Canonical System Enablement <[email protected]>
description:
  Part containing utilities to interact with a TPM chip being part of
  a computer system.
parts: [tpm-tools]

OpenSSH 组件

origin: https://github.com/mariogrip/openssh.git
maintainer: Marius Gripsgard <[email protected]>
description:
  OpenSSH is the premier connectivity tool for remote login with the SSH protocol. It encrypts all traffic 
  to eliminate eavesdropping, connection hijacking, and other attacks. In addition, OpenSSH provides a 
  large suite of secure tunneling capabilities, several authentication methods, and sophisticated 
  configuration options.
parts: [openssh]