From 12913ccf454c1bc82a51c59872f8185b40c533c5 Mon Sep 17 00:00:00 2001 From: Linus Heckemann Date: Fri, 16 Mar 2018 22:15:24 +0000 Subject: [PATCH] nix-shell: allow symlinks to .drvs This makes persistent shell environments easier to use. --- src/nix-build/nix-build.cc | 8 ++++++-- src/nix-instantiate/nix-instantiate.cc | 2 +- tests/nix-shell.sh | 12 ++++++++++++ 3 files changed, 19 insertions(+), 3 deletions(-) diff --git a/src/nix-build/nix-build.cc b/src/nix-build/nix-build.cc index 99f773451..cf628519c 100755 --- a/src/nix-build/nix-build.cc +++ b/src/nix-build/nix-build.cc @@ -271,10 +271,14 @@ void mainWrapped(int argc, char * * argv) exprs = {state.parseStdin()}; else for (auto i : left) { + auto absolute = i; + try { + absolute = canonPath(absPath(i), true); + } catch (Error e) {}; if (fromArgs) exprs.push_back(state.parseExprFromString(i, absPath("."))); - else if (store->isStorePath(i) && std::regex_match(i, std::regex(".*\\.drv(!.*)?"))) - drvs.push_back(DrvInfo(state, store, i)); + else if (store->isStorePath(absolute) && std::regex_match(absolute, std::regex(".*\\.drv(!.*)?"))) + drvs.push_back(DrvInfo(state, store, absolute)); else /* If we're in a #! script, interpret filenames relative to the script. */ diff --git a/src/nix-instantiate/nix-instantiate.cc b/src/nix-instantiate/nix-instantiate.cc index dd262bea0..5049460c7 100644 --- a/src/nix-instantiate/nix-instantiate.cc +++ b/src/nix-instantiate/nix-instantiate.cc @@ -70,7 +70,7 @@ void processExpr(EvalState & state, const Strings & attrPaths, if (gcRoot == "") printGCWarning(); else { - Path rootName = gcRoot; + Path rootName = indirectRoot ? absPath(gcRoot) : gcRoot; if (++rootNr > 1) rootName += "-" + std::to_string(rootNr); auto store2 = state.store.dynamic_pointer_cast(); if (store2) diff --git a/tests/nix-shell.sh b/tests/nix-shell.sh index f7cac6ecf..063e97ce2 100644 --- a/tests/nix-shell.sh +++ b/tests/nix-shell.sh @@ -17,6 +17,18 @@ output=$(nix-shell --pure shell.nix -A shellDrv --run \ [[ $(nix-shell --pure $(nix-instantiate shell.nix -A shellDrv) --run \ 'echo "$IMPURE_VAR - $VAR_FROM_STDENV_SETUP - $VAR_FROM_NIX"') = " - foo - bar" ]] +# Test nix-shell on a .drv symlink + +# Legacy: absolute path and .drv extension required +nix-instantiate shell.nix -A shellDrv --indirect --add-root shell.drv +[[ $(nix-shell --pure $PWD/shell.drv --run \ + 'echo "$IMPURE_VAR - $VAR_FROM_STDENV_SETUP - $VAR_FROM_NIX"') = " - foo - bar" ]] + +# New behaviour: just needs to resolve to a derivation in the store +nix-instantiate shell.nix -A shellDrv --indirect --add-root shell +[[ $(nix-shell --pure shell --run \ + 'echo "$IMPURE_VAR - $VAR_FROM_STDENV_SETUP - $VAR_FROM_NIX"') = " - foo - bar" ]] + # Test nix-shell -p output=$(NIX_PATH=nixpkgs=shell.nix nix-shell --pure -p foo bar --run 'echo "$(foo) $(bar)"') [ "$output" = "foo bar" ]