nix needs env vars as absolute paths

Dependencies

• [2] 3LMG6GBH tests: $(topsrc_dir) -> $(top_srcdir).
• [3] WHS5RMPO
• [4] JRVI4XTV tests: Use $(builddir) instead of `pwd`.
• [5] G2ZB6464 first test, not yet in buildprocess
• [*] HX4QYOYA add first evaluations tests

Change contents

• replacement in tests/Makefile.am at line 3
  [3.65]→[3.65:102](∅→∅)
  − HYDRA_DATA="$(builddir)/data" \
  [3.65]

  [2.0]
  + HYDRA_DATA="$(abs_builddir)/data" \
• replacement in tests/Makefile.am at line 6
  [3.160]→[3.160:296](∅→∅)
  − NIX_STATE_DIR="$(builddir)/nix/var/nix" \

  − NIX_STORE_DIR="$(builddir)/nix/store" \

  − NIX_LOG_DIR="$(builddir)/nix/var/log/nix" \
  [3.160]

  [3.296]
  + NIX_STATE_DIR="$(abs_builddir)/nix/var/nix" \

  + NIX_STORE_DIR="$(abs_builddir)/nix/store" \

  + NIX_LOG_DIR="$(abs_builddir)/nix/var/log/nix" \
• edit in tests/Makefile.am at line 21
  [7.429]

  [7.429]
  + rob:

  + echo $(TESTS_ENVIRONMENT)