I have a local conanfile.py to consume a package, the package is already located on the local cache (~/.conan/).
In the conanfile.py there is the imports() function in which I copy some files from the package into my build folder.
I have two files with the same name in different directories and I copy them to the same directory and rename one of them.
After I do that, I am left with an empty directory I want to remove, but can't find a way to do so from conanfile.py, every attempt seems to remove the folder before the files gets run. My imports looks as follows:
class SomeConanPkg(ConanFile):
name = "SomeName"
description = "SomeDesc"
requires = (
"SomePkg/1.0.0.0#SomeRepo/stable")
def imports(self):
# copy of 1st file
self.copy("somefile.dll", src=os.path.join("src"), dst=os.path.join(build_dest))
# copy of 2nd file to nested directory
self.copy("somefile.dll", src=os.path.join("src", "folder"), dst=os.path.join(build_dst, "folder"))
# move and rename the file to parent directory
shutil.copy2(os.path.join(build_dst, "folder", "somefile.dll"), os.path.join(build_dst, "renamed_file.dll"))
# now build_dst/folder is an empty directory
I have tried to use conan tools.rmmdir() or just calling shutil.rmmtree() but all of them seems to run before the files gets copied.
I also tried to add a package() or deploy() member functions and execute the remove inside but these methods don't seem to run at all (verified with a debug print).
Any ideas?
I ended us solving it in the package creation side.
Renamed the files as I wanted and then just consumed them
Try conan remove <package name> . If you do not know the exact package name you can also use conan search to see the list of packages before you use conan remove.
I am Using maven to create a war file
my folder <app> contains folder1 folder2 file1 ..
i want to get only file1
I have tried with the following..
<packagingExcludes>app/*/*.js</packagingExcludes>
any help here
The configuration is correct but the regex looks different.We use ** to indicate multiple directories and * to indicate an optional part of a file or directory name, as mentioned here. If I am not wrong, your regex looks like excluding all .js files in all folders of app, which is different from your requirement
I'm trying to .gitignore emacs temporary/autosave files. I'm using...
\.\#.*
in my .gitignore.
But git add -A run in a subfolder is still giving me:
# new file: .#make_collections.py
# new file: .#norm_collections.py
# new file: make_collections.py
# new file: norm_collections.py
even though
\.\#.*
is clearly getting the right file names and not the wrong ones when I test it with a regex tester.
You can also instruct emacs to save the autosave files in a different directory altogether by setting the variable auto-save-file-name-transforms, I have this in my init file
(setq auto-save-file-name-transforms
`((".*" ,(concat user-emacs-directory "auto-save/") t)))
This instructs emacs to store the auto-saves inside the auto-save folder in the user-emacs-directory (usually ~/.emacs.d).
To save backup files in a different directory set the variable backup-directory-alist, the following will save backup files inside backups folder in the user-emacs-directory
(setq backup-directory-alist
`(("." . ,(expand-file-name
(concat user-emacs-directory "backups")))))
gitignore doesn't use regular expressions. Instead it uses shell glob patters. The man page tells you two things important for this situation:
Otherwise, Git treats the pattern as a shell glob suitable for
consumption by fnmatch(3) with the FNM_PATHNAME flag.
and
A line starting with # serves as a comment. Put a backslash ("\")
in front of the first hash for patterns that begin with a hash.
This means that the pattern you want to use is simply .#*.
Now the second pattern that matov mentioned, #*, doesn't do anything as it is treated as a comment by git. Hence me quoting that second sentence from the man page.
Emacs autosave files are ignored with
\#*#
files are ignored with:
\#*\#
.\#*
If you want an easy way to ignore files, you can also use http://www.gitignore.io which helps create useful .gitignore files for your project.
Here is the emacs template: https://www.gitignore.io/api/emacs
There is also documentation demonstrating how to run gi from the command line.
To suppress the temporary Emacs files appearing on git status globally, you can do the following:
Configure git to use a global excludesfile
Since this is a common problem, git has a specific solution to that:
Patterns which a user wants Git to ignore in all situations (e.g., backup or temporary files generated by the user’s editor of choice) generally go into a file specified by core.excludesFile in the user’s ~/.gitconfig
git config --global core.excludesfile ~/.gitignore_global
Create the respective file
cd
touch .gitignore_global
Paste the following template into the file
# -*- mode: gitignore; -*-
*~
\#*\#
/.emacs.desktop
/.emacs.desktop.lock
*.elc
auto-save-list
tramp
.\#*
# Org-mode
.org-id-locations
*_archive
# flymake-mode
*_flymake.*
# eshell files
/eshell/history
/eshell/lastdir
# elpa packages
/elpa/
# reftex files
.rel
# AUCTeX auto folder
/auto/
# cask packages
.cask/
dist/
# Flycheck
flycheck_*.el
# server auth directory
/server/
# projectiles files
.projectile
# directory configuration
.dir-locals.el
# network security
/network-security.data
Watch git do its magic! :)
I have a python script that queries customer and order information for a database, creates a latex template based on that data with jinja2, and finally calls
subprocess.call(['/usr/texbin/pdflatex', filename], shell = False)
with filename being the latex template.
The folder of the respective filename is named after the customer. I'm operating in Germany, so some of the filenames contain 'Umlaute' such as ö.
I have a folder structure like so:
.
└── invoices
├── customer_no_umlaut
├── invoice_no_umlaut_01
└── invoice_no_umlaut_02
└── cüstömer_with_ümläüt
├── invoice_with_ümlaut_01
└── invoice_with_ümlaut_02
This all works perfectly fine on my local computer.
Since I need to share these files, however, I want to have the pdfs in a Dropbox folder.
So in my code, I plug in the path to the Dropbox folder instead of the original local folder.
What I then get is the latex template in my Dropbox-folder with this text in parenthesis after the filename:
Unicode Encoding Conflict
as in
"Rechnung_Gedöns_4-724_(Unicode-Codierungskonflikt).tex"
So it seems that Dropbox is not happy with my unicode charset.
What I find strange, though, is that this applies to the filename only. The python script is able to create folders in the Dropbox with the customer's name retrieved from the database with the same encoding.
Does someone have any thoughts on how to solve this?
I managed to resolve this by chance more or less.
In my desperation, I deleted the customer folders containing an umlaut in my Dropbox. I then reran the script described in the question again. From the respective customer data, the script creates the path of the target file folder. If the folder does not exist, it is being created.
As I had deleted the folders, they were now created anew. The latex templates where then placed inside and called with
subprocess.call(['/usr/texbin/pdflatex', filename], shell = False)
And everything works fine.
I guess the old versions of the folders must have been where the unicode conflict took place.
Even though I have GOPATH properly set, I still can't get "go build" or "go run" to find my own packages. What am I doing wrong?
$ echo $GOROOT
/usr/local/go
$ echo $GOPATH
/home/mitchell/go
$ cat ~/main.go
package main
import "foobar"
func main() { }
$ cat /home/mitchell/go/src/foobar.go
package foobar
$ go build main.go
main.go:3:8: import "foobar": cannot find package
It does not work because your foobar.go source file is not in a directory called foobar. go build and go install try to match directories, not source files.
Set $GOPATH to a valid directory, e.g. export GOPATH="$HOME/go"
Move foobar.go to $GOPATH/src/foobar/foobar.go and building should work just fine.
Additional recommended steps:
Add $GOPATH/bin to your $PATH by: PATH="$GOPATH/bin:$PATH"
Move main.go to a subfolder of $GOPATH/src, e.g. $GOPATH/src/test
go install test should now create an executable in $GOPATH/bin that can be called by typing test into your terminal.
Although the accepted answer is still correct about needing to match directories with package names, you really need to migrate to using Go modules instead of using GOPATH. New users who encounter this problem may be confused about the mentions of using GOPATH (as was I), which are now outdated. So, I will try to clear up this issue and provide guidance associated with preventing this issue when using Go modules.
If you're already familiar with Go modules and are experiencing this issue, skip down to my more specific sections below that cover some of the Go conventions that are easy to overlook or forget.
This guide teaches about Go modules: https://golang.org/doc/code.html
Project organization with Go modules
Once you migrate to Go modules, as mentioned in that article, organize the project code as described:
A repository contains one or more modules. A module is a collection of
related Go packages that are released together. A Go repository
typically contains only one module, located at the root of the
repository. A file named go.mod there declares the module path: the
import path prefix for all packages within the module. The module
contains the packages in the directory containing its go.mod file as
well as subdirectories of that directory, up to the next subdirectory
containing another go.mod file (if any).
Each module's path not only serves as an import path prefix for its
packages, but also indicates where the go command should look to
download it. For example, in order to download the module
golang.org/x/tools, the go command would consult the repository
indicated by https://golang.org/x/tools (described more here).
An import path is a string used to import a package. A package's
import path is its module path joined with its subdirectory within the
module. For example, the module github.com/google/go-cmp contains a
package in the directory cmp/. That package's import path is
github.com/google/go-cmp/cmp. Packages in the standard library do not
have a module path prefix.
You can initialize your module like this:
$ go mod init github.com/mitchell/foo-app
Your code doesn't need to be located on github.com for it to build. However, it's a best practice to structure your modules as if they will eventually be published.
Understanding what happens when trying to get a package
There's a great article here that talks about what happens when you try to get a package or module: https://medium.com/rungo/anatomy-of-modules-in-go-c8274d215c16
It discusses where the package is stored and will help you understand why you might be getting this error if you're already using Go modules.
Ensure the imported function has been exported
Note that if you're having trouble accessing a function from another file, you need to ensure that you've exported your function. As described in the first link I provided, a function must begin with an upper-case letter to be exported and made available for importing into other packages.
Names of directories
Another critical detail (as was mentioned in the accepted answer) is that names of directories are what define the names of your packages. (Your package names need to match their directory names.) You can see examples of this here: https://medium.com/rungo/everything-you-need-to-know-about-packages-in-go-b8bac62b74cc
With that said, the file containing your main method (i.e., the entry point of your application) is sort of exempt from this requirement.
As an example, I had problems with my imports when using a structure like this:
/my-app
├── go.mod
├── /src
├── main.go
└── /utils
└── utils.go
I was unable to import the code in utils into my main package.
However, once I put main.go into its own subdirectory, as shown below, my imports worked just fine:
/my-app
├── go.mod
├── /src
├── /app
| └── main.go
└── /utils
└── utils.go
In that example, my go.mod file looks like this:
module git.mydomain.com/path/to/repo/my-app
go 1.14
When I saved main.go after adding a reference to utils.MyFunction(), my IDE automatically pulled in the reference to my package like this:
import "git.mydomain.com/path/to/repo/my-app/src/my-app"
(I'm using VS Code with the Golang extension.)
Notice that the import path included the subdirectory to the package.
Dealing with a private repo
If the code is part of a private repo, you need to run a git command to enable access. Otherwise, you can encounter other errors This article mentions how to do that for private Github, BitBucket, and GitLab repos: https://medium.com/cloud-native-the-gathering/go-modules-with-private-git-repositories-dfe795068db4
This issue is also discussed here: What's the proper way to "go get" a private repository?
I solved this problem by set my go env GO111MODULE to off
go env -w GO111MODULE=off
Note: setting GO111MODULE=off will turn off the latest GO Modules feature.
Reference: Why is GO111MODULE everywhere, and everything about Go Modules (updated with Go 1.17)
GO111MODULE with Go 1.16
As of Go 1.16, the default behavior is GO111MODULE=on, meaning that if
you want to keep using the old GOPATH way, you will have to force Go
not to use the Go Modules feature:
export GO111MODULE=off
In the recent go versions from 1.14 onwards, we have to do go mod vendor before building or running, since by default go appends -mod=vendor to the go commands.
So after doing go mod vendor, if we try to build, we won't face this issue.
Edit: since you meant GOPATH, see fasmat's answer (upvoted)
As mentioned in "How do I make go find my package?", you need to put a package xxx in a directory xxx.
See the Go language spec:
package math
A set of files sharing the same PackageName form the implementation of a package.
An implementation may require that all source files for a package inhabit the same directory.
The Code organization mentions:
When building a program that imports the package "widget" the go command looks for src/pkg/widget inside the Go root, and then—if the package source isn't found there—it searches for src/widget inside each workspace in order.
(a "workspace" is a path entry in your GOPATH: that variable can reference multiple paths for your 'src, bin, pkg' to be)
(Original answer)
You also should set GOPATH to ~/go, not GOROOT, as illustrated in "How to Write Go Code".
The Go path is used to resolve import statements. It is implemented by and documented in the go/build package.
The GOPATH environment variable lists places to look for Go code.
On Unix, the value is a colon-separated string.
On Windows, the value is a semicolon-separated string.
On Plan 9, the value is a list.
That is different from GOROOT:
The Go binary distributions assume they will be installed in /usr/local/go (or c:\Go under Windows), but it is possible to install them in a different location.
If you do this, you will need to set the GOROOT environment variable to that directory when using the Go tools.
TL;DR: Follow Go conventions! (lesson learned the hard way), check for old go versions and remove them. Install latest.
For me the solution was different. I worked on a shared Linux server and after verifying my GOPATH and other environment variables several times it still didn't work. I encountered several errors including 'Cannot find package' and 'unrecognized import path'. After trying to reinstall with this solution by the instructions on golang.org (including the uninstall part) still encountered problems.
Took me some time to realize that there's still an old version that hasn't been uninstalled (running go version then which go again... DAHH) which got me to this question and finally solved.
Running go env -w GO111MODULE=auto worked for me
Without editing GOPATH or anything, in my case just worked the following:
/app
├── main.go
├── /utils
└── utils.go
Import packages where needed. This can be unintuitive, because it isn't relative to the app path. You need to add the app in the package path too:
main.go:
package main
import(
"app/util"
)
Being in app directory, run:
go mod init app
go get <package/xxx>
go build main.go / go run main.go
You should be good to go.
GOPATH = /home/go
appPath = /home/projects/app
Create a proper go.mod and go.sum with go mod init app (delete old before)
After that resolve all dependencies like missing packages with go get github.com/example/package.
In simple words you can solve the import problem even with GO111MODULE=on with the following syntax for import:
import <your_module_name>/<package_name>
your_module_name -> module name which can be found in the go.mod file of the module as the first line.
example: github.com/nikhilg-hub/todo/ToDoBackend
package_name -> Path to your package within module.
example: orm
So the import statement would look like:
import "github.com/nikhilg-hub/todo/ToDoBackend/orm"
According to me we need to specify the module name + package name because we may need a same package name in two or more different modules.
Note: If you are importing a package from same module still you need to specify the full import path like above.
If you have a valid $GOROOT and $GOPATH but are developing outside of them, you might get this error if the package (yours or someone else's) hasn't been downloaded.
If that's the case, try go get -d (-d flag prevents installation) to ensure the package is downloaded before you run, build or install.
GOROOT should be set to your installation directory (/usr/local/go).
GOPATH should be set to your working directory (something like /home/username/project_folder).
GOPATH should not be set to GOROOT as your own project may need to install packages, and it's not recommended to have those packages in the Go installation folder. Check out this link for more.
For me none of the above solutions worked. But my go version was not the latest one. I have downloaded the latest version and replaced the older version in my mac os after that it worked perfectly.
I had a similar problem when building a docker file:
[1/3] STEP 9/9: RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -o manager main.go
api/v1alpha1/XXX.go:5:2: cannot find package "." in:
/workspace/client/YYY/YYY.go
This only appeared when building the Dockerfile, building locally worked fine.
The problem turned out to be a missing statement in my Dockerfile:
COPY client/ client/
I do not understand why this happens, we must be able to import from wherever our file is in its nest, since I have discovered that if we have more than one nest this will throw an error.
package main
import (
"fmt"
"indexer/source/testPackage3" // this will be show a GOROOT error.
"indexer/testPackage"
"indexer/testPackage2"
)
func main() {
fmt.Println("Agile content indexer -")
fmt.Println(testPackage.Greeting())
fmt.Println(testPackage2.Greeting())
fmt.Println(testPackage3.Greeting())
}
├── testPackage2
│ ├── entry2.go
│ └── source
│ └── entry3.go
To conclude, I just want to tell you, the entry3.go file will not work when imported into my main file, which in this case is (main.go), I do not understand why, therefore, I have simply chosen to use a depth folder in the packages I need to export.
entry.go, entry2.go will work perfectly when imported, but entry3.go will not work..
In addition, both the directory and the name of the package must be the same so that they work properly when importing them.
Have you tried adding the absolute directory of go to your 'path'?
export PATH=$PATH:/directory/to/go/