workflows: run without condition on changed paths

To enable *required status checks / workflows* in the future, we'd like
to run all workflows unconditionally. Since those workflows are already
using cachix, the additional runs will be very cheap. Yes, we'll run
additional jobs, but that will be temporary only, see next commits.

The immediate upside is, that we're not going to accidentally miss some
of the paths that would cause rebuilds as we did in the past.

(cherry picked from commit 540fd4e30f)

.github/workflows/check-shell.yml

@@ -5,9 +5,6 @@ on:
     paths:
       - .github/workflows/check-shell.yml
   pull_request_target:
-    paths:
-      - 'shell.nix'
-      - 'ci/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.run_id }}

.github/workflows/lib-tests.yml

@@ -5,9 +5,6 @@ on:
     paths:
       - .github/workflows/lib-tests.yml
   pull_request_target:
-    paths:
-      - 'lib/**'
-      - 'maintainers/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.run_id }}

.github/workflows/manual-nixos-v2.yml

@@ -8,15 +8,6 @@ on:
     branches:
       - master
       - release-*
-    paths:
-      - "nixos/**"
-      # Also build when the nixpkgs doc changed, since we take things like
-      # the release notes and some css and js files from there.
-      # See nixos/doc/manual/default.nix
-      - "doc/**"
-      # Build when something in lib changes
-      # Since the lib functions are used to 'massage' the options before producing the manual
-      - "lib/**"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.run_id }}

.github/workflows/manual-nixpkgs-v2.yml

@@ -5,10 +5,6 @@ on:
     paths:
       - .github/workflows/manual-nixpkgs-v2.yml
   pull_request_target:
-    paths:
-      - 'doc/**'
-      - 'lib/**'
-      - 'pkgs/by-name/ni/nixdoc/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.head_ref || github.run_id }}