Hi. I'm running 64-bit Debian Unstable.
This has been going on since the beginning of June, 2020, with no end in sight. Bug #961990 - IIUC, no activity since 2020-06-02. dimwit@dimwit:~$ date; sudo aptitude -Pvvv update Sun 19 Jul 2020 02:25:08 PM EDT Hit http://ftp.us.debian.org/debian unstable InRelease Current status: 0 (+0) broken, 12 (+0) upgradable, 59230 (+0) new. dimwit@dimwit:~$ date; sudo aptitude -Pvvv full-upgrade Sun 19 Jul 2020 02:25:20 PM EDT The following packages will be upgraded: gcc-10-base libatomic1 libcc1-0 libgcc-s1 libgfortran5 libgomp1 libitm1 liblsan0 libquadmath0 libstdc++6 libtsan0 libubsan1 12 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 2,368 kB of archives. After unpacking 10.2 kB will be used. The following packages have unmet dependencies: libgcc1 : Depends: gcc-10-base (= 10.1.0-1) but 10.1.0-6 is to be installed The following actions will resolve these dependencies: Keep the following packages at their current version: 1) gcc-10-base [10.1.0-1 (now)] 2) libatomic1 [10.1.0-1 (now)] 3) libcc1-0 [10.1.0-1 (now)] 4) libgcc-s1 [10.1.0-1 (now)] 5) libgfortran5 [10.1.0-1 (now)] 6) libgomp1 [10.1.0-1 (now)] 7) libitm1 [10.1.0-1 (now)] 8) liblsan0 [10.1.0-1 (now)] 9) libquadmath0 [10.1.0-1 (now)] 10) libstdc++6 [10.1.0-1 (now)] 11) libtsan0 [10.1.0-1 (now)] 12) libubsan1 [10.1.0-1 (now)] Accept this solution? [Y/n/q/?] n The following actions will resolve these dependencies: Remove the following packages: 1) libgcc1 [1:10.1.0-1 (now, unstable)] Accept this solution? [Y/n/q/?] n The following actions will resolve these dependencies: Remove the following packages: 1) build-essential [12.8 (now, unstable)] 2) g++ [4:9.2.1-3.1 (now, unstable)] 3) g++-9 [9.3.0-15 (now, unstable)] 4) gcc [4:9.2.1-3.1 (now, unstable)] 5) gcc-9 [9.3.0-15 (now, unstable)] 6) libgcc-9-dev [9.3.0-15 (now, unstable)] 7) libstdc++-9-dev [9.3.0-15 (now, unstable)] 8) libubsan1 [10.1.0-1 (now)] Install the following packages: 9) tcc [0.9.27-8 (unstable)] Keep the following packages at their current version: 10) gcc-10-base [10.1.0-1 (now)] 11) libatomic1 [10.1.0-1 (now)] 12) libcc1-0 [10.1.0-1 (now)] 13) libgcc-s1 [10.1.0-1 (now)] 14) libgfortran5 [10.1.0-1 (now)] 15) libgomp1 [10.1.0-1 (now)] 16) libitm1 [10.1.0-1 (now)] 17) liblsan0 [10.1.0-1 (now)] 18) libquadmath0 [10.1.0-1 (now)] 19) libstdc++6 [10.1.0-1 (now)] 20) libtsan0 [10.1.0-1 (now)] Leave the following dependencies unresolved: 21) dpkg-dev recommends build-essential 22) python3-pip recommends build-essential Accept this solution? [Y/n/q/?] n The following actions will resolve these dependencies: Remove the following packages: 1) build-essential [12.8 (now, unstable)] 2) g++ [4:9.2.1-3.1 (now, unstable)] 3) g++-9 [9.3.0-15 (now, unstable)] 4) gcc [4:9.2.1-3.1 (now, unstable)] 5) gcc-9 [9.3.0-15 (now, unstable)] 6) libcc1-0 [10.1.0-1 (now)] Install the following packages: 7) tcc [0.9.27-8 (unstable)] Keep the following packages at their current version: 8) gcc-10-base [10.1.0-1 (now)] 9) libatomic1 [10.1.0-1 (now)] 10) libgcc-s1 [10.1.0-1 (now)] 11) libgfortran5 [10.1.0-1 (now)] 12) libgomp1 [10.1.0-1 (now)] 13) libitm1 [10.1.0-1 (now)] 14) liblsan0 [10.1.0-1 (now)] 15) libquadmath0 [10.1.0-1 (now)] 16) libstdc++6 [10.1.0-1 (now)] 17) libtsan0 [10.1.0-1 (now)] 18) libubsan1 [10.1.0-1 (now)] Leave the following dependencies unresolved: 19) dpkg-dev recommends build-essential 20) python3-pip recommends build-essential Accept this solution? [Y/n/q/?] n The following actions will resolve these dependencies: Remove the following packages: 1) build-essential [12.8 (now, unstable)] 2) g++ [4:9.2.1-3.1 (now, unstable)] 3) g++-9 [9.3.0-15 (now, unstable)] 4) gcc [4:9.2.1-3.1 (now, unstable)] 5) gcc-9 [9.3.0-15 (now, unstable)] 6) libatomic1 [10.1.0-1 (now)] 7) libgcc-9-dev [9.3.0-15 (now, unstable)] 8) libstdc++-9-dev [9.3.0-15 (now, unstable)] Install the following packages: 9) tcc [0.9.27-8 (unstable)] Keep the following packages at their current version: 10) gcc-10-base [10.1.0-1 (now)] 11) libcc1-0 [10.1.0-1 (now)] 12) libgcc-s1 [10.1.0-1 (now)] 13) libgfortran5 [10.1.0-1 (now)] 14) libgomp1 [10.1.0-1 (now)] 15) libitm1 [10.1.0-1 (now)] 16) liblsan0 [10.1.0-1 (now)] 17) libquadmath0 [10.1.0-1 (now)] 18) libstdc++6 [10.1.0-1 (now)] 19) libtsan0 [10.1.0-1 (now)] 20) libubsan1 [10.1.0-1 (now)] Leave the following dependencies unresolved: 21) dpkg-dev recommends build-essential 22) python3-pip recommends build-essential . . . Accept this solution? [Y/n/q/?] q Abandoning all efforts to resolve these dependencies. Abort. dimwit@dimwit:~$ --------------------------------------------------- So far, I have just waited patiently for this to be resolved. But I am starting to get impatient. I could file a "me, too" bug report, but I think that would just be unnecessary noise. Advice?