ci: use Fedora 42 as tier 1 a bit more

Switching to Fedora 43 changes the formatting. As Fedora 43 is not
released yet, it might still update clang-format and make it to change
again, as it happened in the past with other versions of Fedora.

Keep F42 until F43 is more stable.

.gitlab-ci.yml

@@ -60,11 +60,11 @@ variables:
   #
   # This is done by running `ci-fairy generate-template` and possibly bumping
   # ".default_tag".
-  ALPINE_TAG:  'tag-f6403ec26a18'
-  CENTOS_TAG:  'tag-e2b828cf6677'
-  DEBIAN_TAG:  'tag-ad020ba543a8'
-  FEDORA_TAG:  'tag-e2b828cf6677'
-  UBUNTU_TAG:  'tag-ad020ba543a8'
+  ALPINE_TAG:  'tag-722dacf5c4be'
+  CENTOS_TAG:  'tag-1387a813d200'
+  DEBIAN_TAG:  'tag-447ddf898453'
+  FEDORA_TAG:  'tag-1387a813d200'
+  UBUNTU_TAG:  'tag-447ddf898453'
 
   ALPINE_EXEC: 'bash .gitlab-ci/alpine-install.sh'
   CENTOS_EXEC: 'bash .gitlab-ci/fedora-install.sh'
@@ -102,13 +102,13 @@ variables:
 # Build a container for each distribution + version. The ci-templates
 # will re-use the containers if the tag doesn't change.
 
-tier1:fedora:43@prep:
+tier1:fedora:42@prep:
   extends:
     - .fdo.container-build@fedora
   stage: prep
   variables:
     GIT_STRATEGY: none
-    FDO_DISTRIBUTION_VERSION: '43'
+    FDO_DISTRIBUTION_VERSION: '42'
     FDO_DISTRIBUTION_TAG: $FEDORA_TAG
     FDO_DISTRIBUTION_EXEC: $FEDORA_EXEC
   rules:
@@ -212,13 +212,13 @@ tier2:alpine:edge@prep:
       when: manual
       allow_failure: true
 
-tier3:fedora:42@prep:
+tier3:fedora:43@prep:
   extends:
     - .fdo.container-build@fedora
   stage: prep
   variables:
     GIT_STRATEGY: none
-    FDO_DISTRIBUTION_VERSION: '42'
+    FDO_DISTRIBUTION_VERSION: '43'
     FDO_DISTRIBUTION_TAG: $FEDORA_TAG
     FDO_DISTRIBUTION_EXEC: $FEDORA_EXEC
   rules:
@@ -382,7 +382,7 @@ tier3:alpine:3.19@prep:
   dependencies: []
 
 
-t_fedora:43:
+t_fedora:42:
   extends:
     - .build@template
     - .fdo.distribution-image@fedora
@@ -398,10 +398,10 @@ t_fedora:43:
         - tarball
         - subtree
   variables:
-    FDO_DISTRIBUTION_VERSION: '43'
+    FDO_DISTRIBUTION_VERSION: '42'
     FDO_DISTRIBUTION_TAG: $FEDORA_TAG
   needs:
-    - "tier1:fedora:43@prep"
+    - "tier1:fedora:42@prep"
   rules:
     - if: $CI_PIPELINE_SOURCE != 'schedule'
 
@@ -503,17 +503,17 @@ t_alpine:edge:
   rules:
     - if: $CI_PIPELINE_SOURCE != 'schedule'
 
-t_fedora:42:
+t_fedora:43:
   extends:
     - .build@template
     - .fdo.distribution-image@fedora
     - .nm_artifacts_debug
   stage: tier3
   variables:
-    FDO_DISTRIBUTION_VERSION: '42'
+    FDO_DISTRIBUTION_VERSION: '43'
     FDO_DISTRIBUTION_TAG: $FEDORA_TAG
   needs:
-    - "tier3:fedora:42@prep"
+    - "tier3:fedora:43@prep"
   rules:
     - if: $CI_PIPELINE_SOURCE != 'schedule'
 
@@ -667,10 +667,10 @@ check-patch:
   extends:
     - .fdo.distribution-image@fedora
   variables:
-    FDO_DISTRIBUTION_VERSION: '43'
+    FDO_DISTRIBUTION_VERSION: '42'
     FDO_DISTRIBUTION_TAG: $FEDORA_TAG
   needs:
-    - "tier1:fedora:43@prep"
+    - "tier1:fedora:42@prep"
   rules:
     - if: $CI_PIPELINE_SOURCE != 'schedule'
   stage: tier1
@@ -682,10 +682,10 @@ check-tree:
   extends:
     - .fdo.distribution-image@fedora
   variables:
-    FDO_DISTRIBUTION_VERSION: '43'
+    FDO_DISTRIBUTION_VERSION: '42'
     FDO_DISTRIBUTION_TAG: $FEDORA_TAG
   needs:
-    - "tier1:fedora:43@prep"
+    - "tier1:fedora:42@prep"
   rules:
     - if: $CI_PIPELINE_SOURCE == 'merge_request_event' && $CI_MERGE_REQUEST_TARGET_BRANCH_NAME != $CI_DEFAULT_BRANCH
       allow_failure: true
@@ -715,9 +715,9 @@ pages:
       when: never
     - if: $CI_MERGE_REQUEST_SOURCE_BRANCH_NAME == 'main'
   dependencies:
-    - "t_fedora:43: [meson+gcc+docs+valgrind]"
+    - "t_fedora:42: [meson+gcc+docs+valgrind]"
   needs:
-    - "t_fedora:43: [meson+gcc+docs+valgrind]"
+    - "t_fedora:42: [meson+gcc+docs+valgrind]"
 
 triage:issues:
   stage: triage
@@ -734,11 +734,11 @@ coverity:
   extends:
     - .fdo.distribution-image@fedora
   variables:
-    FDO_DISTRIBUTION_VERSION: '43'
+    FDO_DISTRIBUTION_VERSION: '42'
     FDO_DISTRIBUTION_TAG: $FEDORA_TAG
   stage: coverity
   needs:
-    - "tier1:fedora:43@prep"
+    - "tier1:fedora:42@prep"
   rules:
     - if: $CI_PIPELINE_SOURCE == "schedule" && $SCHEDULED_PIPELINE_NAME == "weekly"
   script:

.gitlab-ci/config.yml

@@ -23,7 +23,7 @@ distributions:
   - name: fedora
     tier: 1
     versions:
-      - '43'
+      - '42'
 
   # TIER 2: distribution versions that will or might use the current NM version.
   # Run when doing a release.
@@ -55,7 +55,7 @@ distributions:
   - name: fedora
     tier: 3
     versions:
-      - '42'
+      - '43'
       - '41'
   - name: ubuntu
     tier: 3

.gitlab-ci/distros-info.yml

@@ -11,10 +11,10 @@ fedora:
 - version: 43
   support: 2026-12-02
   nm: 1.54
-  tier1-default: yes
 - version: 42
   support: 2026-05-13
   nm: 1.52
+  tier1-default: yes
 - version: 41
   support: 2025-11-19
   nm: 1.50