[DEVOPS-779] simplify CI setup with buildkite hooks

scripts/ci/nix-shell.sh → .buildkite/hooks/pre-command

@@ -1,7 +1,3 @@
-#!/bin/sh
-# sh is really bash in this case
-# shellcheck disable=SC2039
-
 set -x
 
 case $(uname -s | tr '[:upper:]' '[:lower:]') in
@@ -21,7 +17,6 @@ NIX_BUILD_SHELL="${NIX_BUILD_SHELL:-$NIX_PROFILE_BINPATH/bash}"
 
 export NIX_REMOTE=daemon
 NIX_PATH="nixpkgs=$(${NIX_BUILD} fetch-nixpkgs.nix -o nixpkgs)"
+export PATH=$NIX_PROFILE_BINPATH:$PATH
 export NIX_PATH
 export NIX_BUILD_SHELL
-
-${NIX_SHELL} -p nix bash coreutils zlib gmp ncurses "$@"

.buildkite/pipeline.yml

@@ -1,30 +1,30 @@
 steps:
   - label: 'hlint'
-    command: 'scripts/ci/nix-shell.sh -p hlint moreutils --run scripts/haskell/lint.sh'
+    command: 'nix-shell -p hlint moreutils --run scripts/haskell/lint.sh'
     agents:
       system: x86_64-linux
 
   - label: 'stack2nix'
-    command: 'scripts/ci/nix-shell.sh -p cabal2nix stack cabal-install ghc moreutils expect -Q -j 4 --run scripts/check-stack2nix.sh'
+    command: 'nix-shell -Q -j 4 --run scripts/check-stack2nix.sh'
     agents:
       system: x86_64-linux
 
   - label: 'cardano-x86_64-linux'
-    command: 'scripts/ci/nix-shell.sh --run scripts/ci/ci.sh'
+    command: 'nix-shell --run scripts/ci/ci.sh'
     agents:
       system: x86_64-linux
 
   - label: 'cardano-x86_64-darwin'
-    command: 'scripts/ci/nix-shell.sh --run scripts/ci/ci.sh'
+    command: 'nix-shell --run scripts/ci/ci.sh'
     agents:
       system: x86_64-darwin
 
   - label: 'release.nix'
-    command: 'scripts/ci/nix-shell.sh --run scripts/ci/check-hydra.sh'
+    command: 'nix-shell --run scripts/ci/check-hydra.sh'
     agents:
       system: x86_64-linux
 
   - label: 'explorer frontend: checking generated dependencies'
-    command: 'scripts/ci/nix-shell.sh --run "cd explorer/frontend && ./nix/generate-frontend-deps.hs --test"'
+    command: "cd explorer/frontend && ./nix/generate-frontend-deps.hs --test"
     agents:
       system: x86_64-linux

pkgs/generate.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p bash
+#!nix-shell -i bash -p bash cabal2nix stack cabal-install ghc
 
 # regenerate the `pkgs/default.nix` file based on the current contents of cardano-sl.cabal and stack.yaml
 

scripts/check-stack2nix.sh

@@ -1,4 +1,5 @@
-#!/usr/bin/env bash
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p git bash
 
 # check and warn if `pkgs/default.nix` is out of date