Bump nix channels in release pipeline (#4964)

### Changes

- Bump nixpkgs version to 24.11 in release pipeline
- Bump nixpkgs to unstable in release flake.nix
- Change release-candidate.sh so it can run outside buildkite

### Issues

#4965

### Notes

I do not think this is solving the issue, but I was not able to
reproduce it locally so I shot in the dark. Because it's flaky, it
succeeded also on buildkite:
https://buildkite.com/cardano-foundation/cardano-wallet-release/builds/718#0194cb3f-964e-44e9-b10b-ef4e42237734/169-311

.buildkite/pipeline.yml

@@ -64,7 +64,9 @@ steps:
     steps:
     - label: Nix Build (linux)
       commands:
-        - nix build .
+        - nix build .#cardano-wallet
+        - nix build .#cardano-node
+        - nix build .#cardano-cli
       agents:
         system: ${linux}
 
@@ -601,8 +603,6 @@ steps:
 
   - group: Docker
     key: docker-artifacts
-
-    # if: build.env("RELEASE_CANDIDATE") != null
     depends_on:
       - linux-artifacts
     steps:
@@ -619,7 +619,6 @@ steps:
     depends_on:
       - docker-artifacts
     key: docker-e2e
-    # if: (build.env("RELEASE_CANDIDATE") != null && build.env("TEST_RC") == "FALSE") || build.tag =~ /^v20/
     steps:
       - label: Mainnet Boot Sync
         timeout_in_minutes: 30
@@ -648,7 +647,7 @@ steps:
           USE_LOCAL_IMAGE: true
 
       - block: Mainnet Boot Sync via Mithril
-        if: build.env("RELEASE_CANDIDATE") == null
+        if: build.env("RELEASE_CANDIDATE") == null || build.env("TEST_RC") == "TRUE"
         depends_on: []
         key: mithril-mainnet-full-sync-block
 

.buildkite/release.yml

@@ -3,7 +3,7 @@ agents:
 
 env:
   LC_ALL: "C.UTF-8"
-  NIX_PATH: "channel:nixos-21.11"
+  NIX_PATH: "channel:nixos-24.11"
   STATE_DIR: "/var/lib/buildkite-agent/cache"
   STATE_DIR_MACOS: "/var/lib/buildkite-agent-hal-mac/cache"
   RELEASE_SCRIPTS_DIR: "./scripts/buildkite/release"

scripts/buildkite/release/flake.nix

@@ -5,8 +5,8 @@
   '';
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs";
-    flake-utils.url = "github:hamishmack/flake-utils/hkm/nested-hydraJobs";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
   };
 
   outputs = inputs:

scripts/buildkite/release/release-candidate.sh

@@ -6,17 +6,19 @@ set -euox pipefail
 # date from git tag
 # example v2023-04-04 -> 2023-04-04
 tag_date() {
-  echo "${1##v}"
+    echo "${1##v}"
 }
 # cabal version from git tag
 # example v2023-04-04 -> 2023.4.4
 tag_cabal_ver() {
-  tag_date "$1" | sed -e s/-0/-/g -e s/-/./g
+    tag_date "$1" | sed -e s/-0/-/g -e s/-/./g
 }
 
 git tag -l | xargs git tag -d
 git fetch --tags
 
+LOCAL_BRANCH_NAME=$(git branch --show-current)
+
 BASE_COMMIT=$(git rev-parse HEAD)
 
 git checkout "$BASE_COMMIT"
@@ -27,7 +29,7 @@ NEW_GIT_TAG=v$today
 
 NEW_CABAL_VERSION=$(tag_cabal_ver "$NEW_GIT_TAG")
 
-OLD_GIT_TAG=$( git tag -l "v2*-*-*" | sort | tail -n1)
+OLD_GIT_TAG=$(git tag -l "v2*-*-*" | sort | tail -n1)
 
 LAST_RELEASE_DATE=$(tag_date "$OLD_GIT_TAG")
 
@@ -45,11 +47,17 @@ fi
 
 CARDANO_NODE_TAG=$(cardano-node version | head -n1 | awk '{print $2}')
 
-if [ "$BUILDKITE_BRANCH" == "master" ]; then
+if [ -n "${BUILDKITE:-}" ]; then
+    BRANCH="$BUILDKITE_BRANCH"
+else
+    BRANCH="$LOCAL_BRANCH_NAME"
+fi
+
+if [ "$BRANCH" == "master" ]; then
     RELEASE_CANDIDATE_BRANCH="release-candidate/$NEW_GIT_TAG"
     TEST_RC="FALSE"
 else
-    RELEASE_CANDIDATE_BRANCH="test-rc/$BUILDKITE_BRANCH"
+    RELEASE_CANDIDATE_BRANCH="test-rc/$BRANCH"
     TEST_RC="TRUE"
 fi
 
@@ -62,7 +70,7 @@ git checkout -b "$RELEASE_CANDIDATE_BRANCH" || true
 sed -i "s|version: .*|version: $NEW_GIT_TAG|g" specifications/api/swagger.yaml
 git commit -m "Update wallet version in swagger.yaml" specifications/api/swagger.yaml
 
-git ls-files  '*.cabal' | xargs sed -i "s|$OLD_CABAL_VERSION|$NEW_CABAL_VERSION|g"
+git ls-files '*.cabal' | xargs sed -i "s|$OLD_CABAL_VERSION|$NEW_CABAL_VERSION|g"
 git commit -am "Update cardano-wallet version in *.cabal files"
 
 sed -i "s|NODE_TAG=.*|NODE_TAG=$CARDANO_NODE_TAG|g" README.md
@@ -83,11 +91,13 @@ git remote get-url origin
 
 git push -f origin "$RELEASE_CANDIDATE_BRANCH"
 
-buildkite-agent meta-data set "release-version" "$NEW_GIT_TAG"
-buildkite-agent meta-data set "release-candidate-commit" "$RELEASE_COMMIT"
-buildkite-agent meta-data set "release-candidate-branch" "$RELEASE_CANDIDATE_BRANCH"
-buildkite-agent meta-data set "release-cabal-version" "$NEW_CABAL_VERSION"
-buildkite-agent meta-data set "test-rc" "$TEST_RC"
-buildkite-agent meta-data set "base-build" "$BUILDKITE_BUILD_ID"
-buildkite-agent meta-data set "node-tag" "$CARDANO_NODE_TAG"
-buildkite-agent meta-data set "last-release-date" "$LAST_RELEASE_DATE"
+if [ -n "${BUILDKITE:-}" ]; then
+    buildkite-agent meta-data set "release-version" "$NEW_GIT_TAG"
+    buildkite-agent meta-data set "release-candidate-commit" "$RELEASE_COMMIT"
+    buildkite-agent meta-data set "release-candidate-branch" "$RELEASE_CANDIDATE_BRANCH"
+    buildkite-agent meta-data set "release-cabal-version" "$NEW_CABAL_VERSION"
+    buildkite-agent meta-data set "test-rc" "$TEST_RC"
+    buildkite-agent meta-data set "base-build" "$BUILDKITE_BUILD_ID"
+    buildkite-agent meta-data set "node-tag" "$CARDANO_NODE_TAG"
+    buildkite-agent meta-data set "last-release-date" "$LAST_RELEASE_DATE"
+fi