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new 6378639909 MINOR: [CI] Install libncurses-dev from unstable on Debian
experimental (#50361)
6378639909 is described below
commit 63786399094964013470d32b0dcfa800156b7930
Author: tadeja <[email protected]>
AuthorDate: Sat Jul 4 01:03:04 2026 +0200
MINOR: [CI] Install libncurses-dev from unstable on Debian experimental
(#50361)
### Rationale for this change
Nightly job `test-debian-experimental-cpp-gcc-15` [fails with this new
error](https://github.com/ursacomputing/crossbow/actions/runs/28637694160/job/84927348010#step:6:3635):
```bash
#9 60.12 E: Unable to satisfy dependencies. Reached two conflicting
assignments:
#9 60.12 1. libncurses-dev:amd64=6.6+20260608-1 is selected for
install because:
#9 60.12 1. llvm-20-dev:amd64=1:20.1.8-1+b4 is selected for install
...
```
Unstable and experimental both had
[ncurses](https://tracker.debian.org/pkg/ncurses) 6.6+20260608-1 but with [2nd
July addition of ...-2 only to
unstable](https://tracker.debian.org/news/1770242/accepted-ncurses-6620260608-2-source-into-unstable/)
causes temp dependency version skew (`libtinfo6`).
### What changes are included in this PR?
Install `libncurses-dev` from the default (unstable) before the `-t
experimental` LLVM install
### Are these changes tested?
To be run by CI job.
### Are there any user-facing changes?
No.
Authored-by: Tadeja Kadunc <[email protected]>
Signed-off-by: Sutou Kouhei <[email protected]>
---
ci/docker/debian-experimental-cpp.dockerfile | 1 +
1 file changed, 1 insertion(+)
diff --git a/ci/docker/debian-experimental-cpp.dockerfile
b/ci/docker/debian-experimental-cpp.dockerfile
index b907392dcd..c0de08e5a4 100644
--- a/ci/docker/debian-experimental-cpp.dockerfile
+++ b/ci/docker/debian-experimental-cpp.dockerfile
@@ -58,6 +58,7 @@ RUN if [ -n "${gcc}" ]; then \
libkrb5-dev \
libldap-dev \
liblz4-dev \
+ libncurses-dev \
libnghttp2-dev \
libopentelemetry-proto-dev \
libprotobuf-dev \
