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Specifying prefix in opam file


Specifying prefix in opam file

By : user2951451
Date : November 18 2020, 11:13 AM
To fix the issue you can do OPAM uses %{prefix}%, not ${prefix}$.
You can see the use of prefix in Creating OPAM Packages part of the docs.
code :


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Opam is always locked by a lock file

Opam is always locked by a lock file


By : Än Dreas
Date : March 29 2020, 07:55 AM
like below fixes the issue It seems that an opam process made a lock file then died unexpectedly somehow leaving the lock file /home/chris/.opam/4.00.1/lock .
If you are sure there is no opam process is running, just remove the lock file. Especially you have rebooted the machine so it is completely safe to remove the file.
opam report config file is missing

opam report config file is missing


By : user3155282
Date : March 29 2020, 07:55 AM
help you fix your problem I deleted the tree under ~/.opam and reinstalled. It is working fine now.
Uninstall binary file when removing OPAM package

Uninstall binary file when removing OPAM package


By : Arif
Date : March 29 2020, 07:55 AM
like below fixes the issue Excerpt from opam file: , You can remove it with the following entry in the remove field
code :
["rm" "-f" "%{bin}%/git-lfs-server"]
In Opam how do I tell which package owns a given file?

In Opam how do I tell which package owns a given file?


By : vengat
Date : March 29 2020, 07:55 AM
this will help There is no such facility, as opam allows packages to install their files virtually everywhere. But in general structure is quite simple and most packages respect it:
Each installed package has its own subfolder in lib, etc, doc and share. For each package opam creates an entry install/.install that may contain files that this package installed, if special facilities, provided by opam, were used in the installation process. binaries are put into bin or sbin without further subdivision.
Can I use opam to make a package out of a local file and install it?

Can I use opam to make a package out of a local file and install it?


By : RED
Date : March 29 2020, 07:55 AM
help you fix your problem You can add a custom opam file in the base directory of the project. See the documentation for how to create that file.
Then you can enter opam pin add . in the base directory and your project will be installed as if it was an opam package. Check opam pin --help for more info (you can also pin to a remote git project for instance).
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