go mod tidy的使用
- 引用项目需要的依赖增加到go.mod文件。
- 去掉go.mod文件中项目不需要的依赖。 下面我们会现场演示这两个作用。
What is Gogo mod tidy?
go mod tidy ensures that the go.mod file matches the source code in the module. It adds any missing module requirements necessary to build the current module’s packages and dependencies, and it removes requirements on modules that don’t provide any relevant packages. It also adds any missing entries to go.sum and removes unnecessary entries.
What happened to the go mod tidy dependency?
After the go mod init, this dependency was included, which is expected: After the go mod tidy, that dependency was changed to its latest tagged version: The go mod tidy added dependencies from test files, which were pruned in the original Gopkg.* files, so I understand there should be some changes and additions.
Why do I need to know about the go MOD files?
However, it’s still useful to know about these files to understand cross-platform compatibility constraints or when implementing a module proxy. The go mod download command downloads zip files for one or more modules, then extracts those files into the module cache.
What does the -go flag do in go mod tidy?
If the -go flag is set, go mod tidy will update the go directive to the indicated version, enabling or disabling module graph pruning and lazy module loading (and adding or removing indirect requirements as needed) according to that version.
What does go mod vendor do?
The go mod vendor command constructs a directory named vendor in the main module's root directory that contains copies of all packages needed to support builds and tests of packages in the main module. Packages that are only imported by tests of packages outside the main module are not included.
Does Go mod tidy update dependencies?
Synchronizing your code's dependencies To keep your managed dependency set tidy, use the go mod tidy command. Using the set of packages imported in your code, this command edits your go. mod file to add modules that are necessary but missing. It also removes unused modules that don't provide any relevant packages.
Where does go mod tidy store packages?
All downloaded modules are cached locally in your $GOPATH/pkg/mod directory by default. If you import a package to your project without downloading it first using go get , the latest tagged version of the module providing that package will be installed automatically and added to your go.
Is Go mod necessary?
Without a go. mod file, it is not a module. A module is a collection of packages that are released, versioned, and distributed together. Modules may be downloaded directly from version control repositories or from module proxy servers.
How do I clear my mod cache?
The closest is go clean with -modcache , but that removes the entire module cache: The -modcache flag causes clean to remove the entire module download cache, including unpacked source code of versioned dependencies. This user is first on the weekly Go Language leaderboard.
Does go have a package manager?
The idea behind the first version of go's package management was — no need for module versioning, no need for 3rd-party module repositories, you build everything from your current branch. Pre Go 1.11, adding a dependency meant cloning that dependency's source code repo in your GOPATH .
Is Gopath still needed?
Since 1.12 version Go modules is enabled by default and the GOPATH will be deprecated in 1.13 version. For those who are getting started with Go 1.12, the installation and set up goes will be as follows.
What is go sum used for?
The checksum present in go. sum file is used to validate the checksum of each of direct and indirect dependency to confirm that none of them has been modified. Direct -A direct dependency is a dependency which the module directly imports.
What is the difference between go module and package?
In Go, a package is a directory of .go files, and packages form the basic building blocks of a Go program. Using packages, you organize your code into reusable units. A module, on the other hand, is a collection of Go packages, with dependencies and versioning built-in.
Where should I set Gopath?
The GOPATH environment variable specifies the location of your workspace. It defaults to a directory named go inside your home directory, so $HOME/go on Unix, $home/go on Plan 9, and %USERPROFILE%\go (usually C:\Users\YourName\go ) on Windows.
Where should go mod be located?
What is Go Module. A Module is a collection of Go packages stored in a file tree under $GOPATH/pkg folder with a go. mod file at its root. This file defines the module's path, which is also the import path used for your project, and its dependency requirements, which are the other modules needed for a successful build.
Should you commit go sum?
sum file should be committed along with your go. mod file. go. sum contains the expected cryptographic checksums of the content of specific module versions.
How do I update packages on go mod?
go get -u (same as go get -u . ) updates the package in the current directory, hence the module that provides that package, and its dependencies to the newer minor or patch releases when available. In typical projects, running this in the module root is enough, as it likely imports everything else.
What does +incompatible mean in go mod?
Tags with build metadata are ignored in version control repositories, but build metadata is preserved in versions specified in go. mod files. The suffix +incompatible denotes a version released before migrating to modules version major version 2 or later (see Compatibility with non-module repositories).
How do I update a package in go?
How to upgrade a dependency/package in your current project using Go commandsList all dependencies. First, list all the current dependencies using the following command: go list -m all. ... Download latest version. Next, use the following Go command to download the latest version of the package: go get
How do I get go dependencies?
To install dependencies, use the go get command, which will also update the go. mod file automatically. Since the package is not currently used anywhere in the project, it's marked as indirect. This comment may also appear on an indirect dependency package; that is, a dependency of another dependency.
What is a go mod init?
go mod init — creates a new module, initializing the go.mod file that describes the module. At the start, it will only add the module path and go version in go mod file.
What version of Go is 1.14?
go 1.14 is the golang version this project is using, which is the latest at the moment of creating go mod.
What is a gosum?
go.sum is a generated file you don’t have to edit or modify this file.
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What is a go mod graph?
go mod graph tells you about module-level dependencies (via explicit entries in go.mod files). It doesn't distinguish between test and non-test dependencies: they should all end up in the module graph either way.
How many changes are in a go.mod file?
The go.mod file contains in 122 changes, many involving appending // indirect. The change I'm particularly concerned with is where a dependency is being updated unnecessarily.
Does the Go Mod file pin dependencies?
The cobra module was also updated during the go mod tidy, as it was pinned at an earlier revision before that. The go.mod file does not “pin” dependencies: it only sets minimums, which can be raised by minimums in other transitive dependencies. What does go mod graph tell you about.
Does Cobra have a go.mod file?
It states there's a dependency on v0.3.1, but cobra at v0.0.5 did not have a go.mod file, or any dependency file indicating a v0.3.1+ was required.
Does Go Mod Tidy increase the minimum version?
I've discovered a new situation though in the same repository where go mod tidy repeatedly increases the minimum version, and go mod why, go mod graph, and my own inspection of the dependencies don't point to a reason for the minimum to be higher. My main module is the only module that has go-metrics as a dependency but go mod tidy keeps bumping my minimum version to be the latest commit on the repository.
