Golang开发Go依赖管理工具dep安装验证实现过程

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dep:
 version     : devel
 build date  : 
 git hash    : 
 go version  : go1.10
 go compiler : gc
 platform    : linux/amd64

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go get -u github.com/golang/dep/cmd/dep

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$ dep
Dep is a tool for managing dependencies for Go projects
Usage: "dep [command]" 
Commands: 
  init     Set up a new Go project, or migrate an existing one
  status   Report the status of the project's dependencies
  ensure   Ensure a dependency is safely vendored in the project
  prune    Pruning is now performed automatically by dep ensure.
  version  Show the dep version information
Examples:
  dep init                               set up a new project
  dep ensure                             install the project's dependencies
  dep ensure -update                     update the locked versions of all dependencies
  dep ensure -add github.com/pkg/errors  add a dependency to the project 
Use "dep help [command]" for more information about a command.

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$ dep init -v

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$ dep init -gopath -v

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required = ["github.com/user/thing/cmd/thing"] 
ignored = [
  "github.com/user/project/pkgX",
  "bitbucket.org/user/project/pkgA/pkgY"
] 
[metadata]
key1 = "value that convey data to other systems"
system1-data = "value that is used by a system"
system2-data = "value that is used by another system" 
[[constraint]]
  # Required: the root import path of the project being constrained.
  name = "github.com/user/project"
  # Recommended: the version constraint to enforce for the project.
  # Note that only one of "branch", "version" or "revision" can be specified.
  version = "1.0.0"
  branch = "master"
  revision = "abc123" 
  # Optional: an alternate location (URL or import path) for the project's source.
  source = https://github.com/myfork/package.git 
  # Optional: metadata about the constraint or override that could be used by other independent systems
  [metadata]
  key1 = "value that convey data to other systems"
  system1-data = "value that is used by a system"
  system2-data = "value that is used by another system"

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# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 
[[projects]]
  branch = "master"
  name = "github.com/golang/protobuf"
  packages = [
    "jsonpb",
    "proto",
    "protoc-gen-go/descriptor",
    "ptypes",
    "ptypes/any",
    "ptypes/duration",
    "ptypes/struct",
    "ptypes/timestamp"
  ]
  revision = "bbd03ef6da3a115852eaf24c8a1c46aeb39aa175"

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# 引入该依赖包的最新版本
dep ensure -add github.com/pkg/foo
 
# 引入具有特定约束（指定版本）的依赖包
dep ensure -add github.com/pkg/foo@^1.0.1