Latest versions of Ubuntu packages cause hard to fix conflicts (1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56)

[exoosh]

This is the error I am getting:

Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages will be REMOVED:
  libc++1-21 libc++abi1-21
The following NEW packages will be installed:
  libc++1 libc++abi1
The following packages will be upgraded:
  clang-21 clang-format-21 clang-tidy-21 clang-tools-21 clangd-21 libc++-21-dev libc++abi-21-dev libclang-common-21-dev libclang-cpp21 libclang-rt-21-dev libclang1-21 libllvm21 lld-21 llvm-21 llvm-21-linker-tools
  llvm-21-runtime
16 upgraded, 2 newly installed, 2 to remove and 0 not upgraded.
Need to get 99.7 MB of archives.
After this operation, 709 kB disk space will be freed.
Do you want to continue? [Y/n] y
Get:1 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 libc++-21-dev amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [1567 kB]
Get:2 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 libc++abi-21-dev amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [146 kB]
Get:3 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 libc++abi1 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [120 kB]
Get:4 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 libc++1 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [368 kB]
Get:5 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 lld-21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [1578 kB]
Get:6 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 clang-tidy-21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [2127 kB]
Get:7 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 clang-tools-21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [9605 kB]
Get:8 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 clang-21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [176 kB]
Get:9 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 clangd-21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [3591 kB]
Get:10 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 libclang-common-21-dev amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [801 kB]
Get:11 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 clang-format-21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [104 kB]
Get:12 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 libclang-cpp21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [13.9 MB]
Get:13 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 libllvm21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [30.9 MB]
Get:14 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 libclang1-21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [8239 kB]
Get:15 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 llvm-21 amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [20.1 MB]
Get:16 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 llvm-21-runtime amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [611 kB]
Get:17 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 llvm-21-linker-tools amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [1384 kB]
Get:18 https://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 libclang-rt-21-dev amd64 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 [4304 kB]
Fetched 99.7 MB in 15s (6500 kB/s)
(Reading database ... 105254 files and directories currently installed.)
Preparing to unpack .../libc++-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb ...
Unpacking libc++-21-dev (1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56) over (1:21.1.5~++20251023083335+45afac62e373-1~exp1~20251023083454.54) ...
dpkg: error processing archive /var/cache/apt/archives/libc++-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/llvm-21/lib/libc++.so.1', which is also in package libc++1-21 1:21.1.5~++20251023083335+45afac62e373-1~exp1~20251023083454.54
Preparing to unpack .../libc++abi-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb ...
Unpacking libc++abi-21-dev (1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56) over (1:21.1.5~++20251023083335+45afac62e373-1~exp1~20251023083454.54) ...
dpkg: error processing archive /var/cache/apt/archives/libc++abi-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/llvm-21/lib/libc++abi.so.1', which is also in package libc++abi1-21 1:21.1.5~++20251023083335+45afac62e373-1~exp1~20251023083454.54
Errors were encountered while processing:
 /var/cache/apt/archives/libc++-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb
 /var/cache/apt/archives/libc++abi-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb
needrestart is being skipped since dpkg has failed
E: Sub-process /usr/bin/dpkg returned an error code (1)

I was trying to report this via salsa.debian.org, but unfortunately it's going to take some time to get approved (if at all).

Perhaps also of interest:

$ apt policy libc++1 libc++abi1
libc++1:
  Installed: (none)
  Candidate: 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56
  Version table:
     1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 900
        900 http://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 Packages
     1:20.1.8~++20250804090239+87f0227cb601-1~exp1~20250804210352.139 900
        900 http://apt.llvm.org/noble llvm-toolchain-noble-20/main amd64 Packages
     1:18.0-59~exp2 500
        500 http://archive.ubuntu.com/ubuntu noble/universe amd64 Packages
libc++abi1:
  Installed: (none)
  Candidate: 1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56
  Version table:
     1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56 900
        900 http://apt.llvm.org/noble llvm-toolchain-noble-21/main amd64 Packages
     1:20.1.8~++20250804090239+87f0227cb601-1~exp1~20250804210352.139 900
        900 http://apt.llvm.org/noble llvm-toolchain-noble-20/main amd64 Packages
     1:18.0-59~exp2 500
        500 http://archive.ubuntu.com/ubuntu noble/universe amd64 Packages

FYI: @sylvestre (since you seem to be the maintainer?!)

[exoosh]

That's the state one ends up with. Probably some fumbling with dpkg will save me. But I need to sleep on it first.

# apt full-upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  libabsl20220623t64 libcares2 libgrpc++1.51t64 libgrpc29t64 libprotobuf32t64 libprotoc32t64 libre2-10
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  libc++1-21 libc++abi1-21
The following NEW packages will be installed:
  libc++1 libc++abi1
The following packages will be upgraded:
  clang-21 clang-format-21 clang-tidy-21 clang-tools-21 clangd-21 libc++-21-dev libc++abi-21-dev libclang-common-21-dev libclang-cpp21 libclang-rt-21-dev libclang1-21 libllvm21 lld-21 llvm-21 llvm-21-dev llvm-21-linker-tools
  llvm-21-runtime llvm-21-tools
18 upgraded, 2 newly installed, 2 to remove and 0 not upgraded.
Need to get 0 B/157 MB of archives.
After this operation, 736 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 81231 files and directories currently installed.)
Preparing to unpack .../libc++-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb ...
Unpacking libc++-21-dev (1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56) over (1:21.1.5~++20251023083335+45afac62e373-1~exp1~20251023083454.54) ...
dpkg: error processing archive /var/cache/apt/archives/libc++-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/llvm-21/lib/libc++.so.1', which is also in package libc++1-21 1:21.1.5~++20251023083335+45afac62e373-1~exp1~20251023083454.54
Preparing to unpack .../libc++abi-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb ...
Unpacking libc++abi-21-dev (1:21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56) over (1:21.1.5~++20251023083335+45afac62e373-1~exp1~20251023083454.54) ...
dpkg: error processing archive /var/cache/apt/archives/libc++abi-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/llvm-21/lib/libc++abi.so.1', which is also in package libc++abi1-21 1:21.1.5~++20251023083335+45afac62e373-1~exp1~20251023083454.54
Errors were encountered while processing:
 /var/cache/apt/archives/libc++-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb
 /var/cache/apt/archives/libc++abi-21-dev_1%3a21.1.6~++20251111103412+4b2ac3f7a210-1~exp1~20251111103428.56_amd64.deb
needrestart is being skipped since dpkg has failed
E: Sub-process /usr/bin/dpkg returned an error code (1)

[sylvestre]

looking into it

[sylvestre]

I started a build that might fix it

[doko42]

you can work around it by uninstalling all the libc++* packages, and re-installing all the new ones. The breaks/replaces relations are for the Debian and Ubuntu uploads. That's all I know about and can control ...

[exoosh]

@doko42 this was one of the things I attempted immediately. You can uninstall only them indeed (by using dpkg and forcing overwrites), but it still didn't solve the issue.

I now ended up scrapping all of it (everything from apt.llvm.org):

dpkg --remove --force-overwrite  $(dpkg -l|awk '$1 ~ /i/ && $3 ~ /(45afac62e373|4b2ac3f7a210)/ {print $2}')

... and will attempt a reinstall after that.

Installing afresh after removing every Clang/LLVM 21 related package from apt.llvm.org worked.

[sylvestre]

I think I fixed the issue. please let me know if this isn't the case (with a log)

[exoosh]

@sylvestre I am not able to find the older packages anymore. As mentioned before, I went ahead and removed all packages from apt.llvm.org for the 21.1 releases and then managed to reinstall everything without a hitch (with the version that didn't upgrade with the previous October build 1:21.1.5~++20251023083335 present).

Just checked if I have the .deb files still around, but I don't. Sorry.

[iamsubhranil]

Hi @sylvestre, this is still not fixed for me.

$ sudo apt upgrade
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 clang-22 : Depends: libllvm22 (= 1:22~++20251025081839+7be3cac735b2-1~exp1~20251025082009.1248) but 1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288 is installed
            Depends: libclang-common-22-dev (= 1:22~++20251025081839+7be3cac735b2-1~exp1~20251025082009.1248) but 1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288 is installed
            Depends: llvm-22-linker-tools (= 1:22~++20251025081839+7be3cac735b2-1~exp1~20251025082009.1248) but 1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288 is installed
            Depends: libclang1-22 (= 1:22~++20251025081839+7be3cac735b2-1~exp1~20251025082009.1248) but 1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288 is installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

Running apt --fix-broken install, I'm back to the original error:

$ sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  libabsl20220623t64 libgrpc++1.51t64 libgrpc29t64 libprotobuf32t64 libprotoc32t64 libre2-10
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  clang-22 clang-tools-22
Suggested packages:
  clang-22-doc wasi-libc
The following packages will be upgraded:
  clang-22 clang-tools-22
2 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
15 not fully installed or removed.
Need to get 10.0 MB of archives.
After this operation, 59.4 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 https://apt.llvm.org/noble llvm-toolchain-noble/main amd64 clang-tools-22 amd64 1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288 [9829 kB]
Get:2 https://apt.llvm.org/noble llvm-toolchain-noble/main amd64 clang-22 amd64 1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288 [176 kB]
Fetched 10.0 MB in 2s (4917 kB/s)
debconf: delaying package configuration, since apt-utils is not installed
(Reading database ... 68281 files and directories currently installed.)
Preparing to unpack .../clang-tools-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb ...
Unpacking clang-tools-22 (1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288) over (1:22~++20251025081839+7be3cac735b2-1~exp1~20251025082009.1248) ...
dpkg: error processing archive /var/cache/apt/archives/clang-tools-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb (--unpack):
 trying to overwrite '/usr/bin/asan_symbolize-22', which is also in package clang-22 1:22~++20251025081839+7be3cac735b2-1~exp1~20251025082009.1248
Preparing to unpack .../clang-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb ...
Unpacking clang-22 (1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288) over (1:22~++20251025081839+7be3cac735b2-1~exp1~20251025082009.1248) ...
dpkg: error processing archive /var/cache/apt/archives/clang-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/llvm-22/bin/clang-scan-deps', which is also in package clang-tools-22 1:22~++20251025081839+7be3cac735b2-1~exp1~20251025082009.1248
Errors were encountered while processing:
 /var/cache/apt/archives/clang-tools-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb
 /var/cache/apt/archives/clang-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

[sylvestre]

This is 22, I think I fixed 21

[Tirine]

Seems to still be the case for 22, I got almost exactly the same error as @iamsubhranil, with only the build number differ:

Preparing to unpack .../clang-tools-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb ...
Unpacking clang-tools-22 (1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288) over (1:22~++20251025081749+57828a6d5de0-1~exp1~20251025201905.1249) ...
dpkg: error processing archive /var/cache/apt/archives/clang-tools-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb (--unpack):
 trying to overwrite '/usr/bin/asan_symbolize-22', which is also in package clang-22 1:22~++20251025081749+57828a6d5de0-1~exp1~20251025201905.1249
Preparing to unpack .../clang-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb ...
Unpacking clang-22 (1:22~++20251113081817+83118de72238-1~exp1~20251113201939.1288) over (1:22~++20251025081749+57828a6d5de0-1~exp1~20251025201905.1249) ...
dpkg: error processing archive /var/cache/apt/archives/clang-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/llvm-22/bin/clang-scan-deps', which is also in package clang-tools-22 1:22~++20251025081749+57828a6d5de0-1~exp1~20251025201905.1249
Errors were encountered while processing:
 /var/cache/apt/archives/clang-tools-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb
 /var/cache/apt/archives/clang-22_1%3a22~++20251113081817+83118de72238-1~exp1~20251113201939.1288_amd64.deb

Should one open a separate ticket for that? :)

[sylvestre]

no need