Re: [gentoo-user] Yet another USE flag problem

[Bertram Scharpf]

On Monday, 04. Jan 2021, 13:39:47 +0100, Arve Barsnes wrote:
> On Mon, 4 Jan 2021 at 13:15, Bertram Scharpf <lists@×××××××××××××××.de> wrote:
> >   # grep -rnHi lua /etc/portage
> >   /etc/portage/make.conf:40:LUA_SINGLE_TARGET="lua5-1" #  luajit
> >   /etc/portage/package.use/zz-autouse:3:>=dev-lua/lpeg-1.0.1 luajit
> >   /etc/portage/package.use/zz-autouse:6:>=dev-lua/mpack-1.0.4 luajit
> >   /etc/portage/package.use/zz-autouse:10:>=dev-lua/luv-1.30.1.1 luajit
> >   /etc/portage/package.accept_keywords/local:26:<dev-lang/lua-5.2              ~amd64
> >
> > Here's another time how emerge complains:
> >
> >   - app-editors/neovim-0.4.4-r100::gentoo (Change USE: -lua_single_target_lua5-1, this change violates use flag constraints defined by app-editors/neovim-0.4.4-r100: 'exactly-one-of ( lua_single_target_luajit lua_single_target_lua5-1 lua_single_target_lua5-2 )')
> >
> > As far as I understand this, emerge tells me to remove the
> > use flag "lua_single_target_lua5-1" because the use flag
> > "lua_single_target_lua5-1" is required.
>
> As far as I understand it, this is saying that your emerge command is
> about to remove that USE flag from neovim, which breaks the
> constraint. So basically some other package is stopping your update.

If this is what happens, then I miss that emerge tells me
the reason why it tries to remove the use flag.

> Your original mail mentioned that this was because of dev-lua/luv. You
> have in your /etc/portage/package.use/zz-autouse set the luajit flag
> on this package. Might this be the problem?

> I'm not that familiar with lua, but as far as I understand the output,
> app-editors/neovim and dev-lua/luv needs the same LUA_SINGLE_TARGET,
> and setting that USE flag on dev-lua/luv might trip up this. Reading
> the latest ebuild, this flag has been removed in the ~amd64 package,
> so might as well remove it now and see if that fixes your problem.

As the name of the file tells, the "zz-autouse" use flags
were set a long time ago by - of course - emerge. I tried to
remove them, but that didn't change anything.

  emerge: there are no ebuilds built with USE flags to satisfy "dev-lua/luv[lua_single_target_luajit(-)?,lua_single_target_lua5-1(-)?,lua_single_target_lua5-2(-)?]".
  !!! One of the following packages is required to complete your request:
  - app-editors/neovim-0.4.4-r100::gentoo (Change USE: -lua_single_target_lua5-1, this change violates use flag constraints defined by app-editors/neovim-0.4.4-r100: 'exactly-one-of ( lua_single_target_luajit lua_single_target_lua5-1 lua_single_target_lua5-2 )')
  (dependency required by "app-editors/neovim-0.4.4-r100::gentoo" [ebuild])
  (dependency required by "@selected" [set])
  (dependency required by "@world" [argument])

  # grep -rnHi '^[^#]*lua' /etc/portage
  /etc/portage/package.accept_keywords/local:26:<dev-lang/lua-5.2              ~amd64


I tried to set the single target to "luajit", but that
didn't help either:

  emerge: there are no ebuilds built with USE flags to satisfy "dev-lua/luv[lua_single_target_luajit(-)?,lua_single_target_lua5-1(-)?,lua_single_target_lua5-2(-)?]".
  !!! One of the following packages is required to complete your request:
  - app-editors/neovim-0.4.4-r100::gentoo (Change USE: -lua_single_target_luajit, this change violates use flag constraints defined by app-editors/neovim-0.4.4-r100: 'exactly-one-of ( lua_single_target_luajit lua_single_target_lua5-1 lua_single_target_lua5-2 )')
  (dependency required by "app-editors/neovim-0.4.4-r100::gentoo" [ebuild])
  (dependency required by "@selected" [set])
  (dependency required by "@world" [argument])

  # grep -rnHi '^[^#]*lua' /etc/portage
  /etc/portage/make.conf:40:LUA_SINGLE_TARGET="luajit" #  lua5-1
  /etc/portage/package.use/zz-autouse:3:>=dev-lua/lpeg-1.0.1 luajit
  /etc/portage/package.use/zz-autouse:6:>=dev-lua/mpack-1.0.4 luajit
  /etc/portage/package.use/zz-autouse:10:>=dev-lua/luv-1.30.1.1 luajit
  /etc/portage/package.accept_keywords/local:26:<dev-lang/lua-5.2              ~amd64
  # emerge --info | grep -i lua
  LUA_SINGLE_TARGET="luajit"
  LUA_TARGETS="lua5-1"
  USE="..." ... LUA_SINGLE_TARGET="luajit" LUA_TARGETS="lua5-1" ...
  USE_EXPAND="... LUA_SINGLE_TARGET LUA_TARGETS ..."

What else could I try?

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de