"internal error in pkgdepends" when trying pak::pak("parallel")

[brian-bucher]

I am not well-experienced in these matters, but the Error message says to report an issue here, so I am doing so.

I want to update the parallel package using pak::pak()

> pak::pak("parallel")
Error: 
! error in pak subprocess
Caused by error in `pkgplan_solve(self, private, match.arg(policy))`:
! Error in dependency solver, cannot solve installation.
ℹ Solver status: -1.
ℹ This is an internal error in pkgdepends, please report an issue at <https://github.com/r-lib/pkgdepends/issues>.
Type .Last.error to see the more details.

Here is the .Last.error output

> .Last.error
<callr_error/rlib_error_3_0/rlib_error/error>
Error: 
! error in pak subprocess
Caused by error in `pkgplan_solve(self, private, match.arg(policy))`:
! Error in dependency solver, cannot solve installation.
ℹ Solver status: -1.
ℹ This is an internal error in pkgdepends, please report an issue at <https://github.com/r-lib/pkgdepends/issues>.
---
Backtrace:
1. pak::pak("parallel")
2. pak::pkg_install(pkg, ...)
3. pak:::remote(function(...) get("pkg_install_make_plan", asNamespace("pak"))(...), …
4. err$throw(res$error)
---
Subprocess backtrace:
1. base::withCallingHandlers(cli_message = function(msg) { …
2. get("pkg_install_make_plan", asNamespace("pak"))(...)
3. prop$solve()
4. private$plan$solve(policy = private$policy)
5. pkgdepends:::pkgplan_solve(self, private, match.arg(policy))
6. base::throw(pkg_error("Error in dependency solver, cannot solve installation.", …
7. | base::signalCondition(cond)
8. global (function (e) …
> 

Thank you.

[gaborcsardi]

Parallel is a base package, included in R, you can't install or update it.

[brian-bucher]

Right, I had edited my post to remove that.

[gaborcsardi]

It is not possible to update the parallel package, it is part of base R, it is not a package that you can install or update. It is already installed and you cannot update it because its version has to match the R version.

[brian-bucher]

Ohh, I understand now. Thank you for explaining!