Cannot install `ppp-multilink` into image because of conflict with `ppp`, which cannot be deselected. (22.03.)

For Developers
1

Ahoj,

I am trying to build an OpenWRT image with ppp-multilink. As far as I understand, ppp-multilink (CONFIG_PACKAGE_ppp-multilink=y) is a ppp with additional multilink support, i.e. it especially provides ppp.

However, there are packages that specifically depend on ppp (CONFIG_PACKAGE_ppp) but cannot be satisfied wirth ppp-multilink (mdemmanager, pppossh && (dropbear || openssh-client), openfortivpn, sstp-client, pptpd, rp-pppoe-sniff), so I am forced to bake ppp into the image, which then gives a
But that file is already provided by package * ppp
error when trying to install ppp-multilink:

  • From the help page of ppp in make menuconfig:
    CONFIG_PACKAGE_ppp:
[...]
  │ Symbol: PACKAGE_ppp [=y]
  │ Type  : tristate                                                                                                                                      
  │ Defined at tmp/.config-package.in:133532
  │   Prompt: ppp........................................................... PPP daemon
  │   Location:
  │     -> Network
  │ Selects: PACKAGE_kmod-ppp [=y] && PACKAGE_librt [=y] && PACKAGE_libpthread [=y] && PACKAGE_libc [=y]
  │ Selected by [y]:
  │   - PACKAGE_modemmanager [=y]
  │   - PACKAGE_pppossh [=y] && (PACKAGE_dropbear [=y] || PACKAGE_openssh-client [=m])
  │   - PACKAGE_openfortivpn [=y]
  │   - PACKAGE_sstp-client [=y]
  │ Selected by [m]:
  │   - PACKAGE_pptpd [=m]
  │ Selected by [n]:
  │   - MODULE_DEFAULT_ppp [=n] && TARGET_PER_DEVICE_ROOTFS [=n] && m && MODULES [=y]
  │   - PACKAGE_rp-pppoe-sniff [=n] && BROKEN [=n]
  • From the help page of ppp-multilink in make menuconfig:
    CONFIG_PACKAGE_ppp-multilink:
[...]
│ Symbol: PACKAGE_ppp-multilink [=y]
│ Type  : tristate
│ Defined at tmp/.config-package.in:133636
│   Prompt: ppp-multilink........................ PPP daemon (with multilink support) 
│   Location:
│     -> Network
│ Selects: PACKAGE_kmod-ppp [=y] && PACKAGE_libc [=y] && PACKAGE_libpthread [=y] && PACKAGE_librt [=y]
  • When I am running make -j1 in my OpenWRT directory, it fails with file conflicts:
    [...]
 * check_data_file_clashes: Package ppp-multilink wants to install file /[...]/openwrt-22.03/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/root-sunxi/etc/ppp/chap-secrets
  But that file is already provided by package  * ppp
 * check_data_file_clashes: Package ppp-multilink wants to install file /[...]/openwrt-22.03/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/root-sunxi/etc/ppp/filter
  But that file is already provided by package  * ppp
 * check_data_file_clashes: Package ppp-multilink wants to install file /[...]/openwrt-22.03/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/root-sunxi/etc/ppp/options
  But that file is already provided by package  * ppp
 * check_data_file_clashes: Package ppp-multilink wants to install file /[...]/openwrt-22.03/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/root-sunxi/lib/netifd/ppp-down
  But that file is already provided by package  * ppp
 * check_data_file_clashes: Package ppp-multilink wants to install file /[...]/openwrt-22.03/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/root-sunxi/lib/netifd/ppp-up
  But that file is already provided by package  * ppp
 * check_data_file_clashes: Package ppp-multilink wants to install file /[...]/openwrt-22.03/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/root-sunxi/lib/netifd/ppp6-up
  But that file is already provided by package  * ppp
 * check_data_file_clashes: Package ppp-multilink wants to install file /[...]/openwrt-22.03/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/root-sunxi/lib/netifd/proto/ppp.sh
  But that file is already provided by package  * ppp
 * check_data_file_clashes: Package ppp-multilink wants to install file /[...]/openwrt-22.03/build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/root-sunxi/usr/sbin/pppd
  But that file is already provided by package  * ppp
 * opkg_install_cmd: Cannot install package ppp-multilink.
[...]
  • Full OpenWRT configuration: → .config.

How can CONFIG_PACKAGE_ppp-multilink=y be selected?

Regards!

(*ping* @nbd as maintainer of package/network/services/ppp)

2

.. also appears with PACKAGE_ppp-multilink=m, thus effectively making it unable to build ppp-multilink at all for later manual installation with opkg if packages which require ppp are enabled.