lix/src/libutil
John Ericson 4607ac7aed Fix handling of experimental features mid-parse
If we conditionally "declare" the argument, as we did before, based upon
weather the feature is enabled, commands like

    nix --experimental-features=foo ... --thing-gated-on-foo

won't work, because the experimental feature isn't enabled until *after*
we start parsing.

Instead, allow arguments to also be associated with experimental
features (just as we did for builtins and settings), and then the
command line parser will filter out the experimental ones.

Since the effects of arguments (handler functions) are performed right
away, we get the required behavior: earlier arguments can enable later
arguments enabled!

There is just one catch: we want to keep non-positional
flags...non-positional. So if

    nix --experimental-features=foo ... --thing-gated-on-foo

works, then

    nix --thing-gated-on-foo --experimental-features=foo ...

should also work.

This is not my favorite long-term solution, but for now this is
implemented by delaying the requirement of needed experimental features
until *after* all the arguments have been parsed.
2023-03-20 11:35:34 -04:00
..
tests url: make percentEncode stricter, expose and unit test it 2023-02-27 15:30:00 +01:00
abstract-setting-to-json.hh reproducibility: hide non-reproducible settings from manual 2021-12-01 17:25:58 +01:00
ansicolor.hh Change warnings from yellow to magenta 2021-09-14 10:42:29 +02:00
archive.cc Remove FormatOrString and remaining uses of format() 2023-03-02 15:57:54 +01:00
archive.hh Trivial changes from the lazy-trees branch 2022-12-07 14:06:34 +01:00
args.cc Fix handling of experimental features mid-parse 2023-03-20 11:35:34 -04:00
args.hh Fix handling of experimental features mid-parse 2023-03-20 11:35:34 -04:00
callback.hh Move Callback into its own header 2020-09-21 18:42:21 +02:00
canon-path.cc Add CanonPath wrapper to represent canonicalized paths 2022-12-12 19:57:32 +01:00
canon-path.hh Fix CanonPath::dirOf() returning a string_view of a temporary 2022-12-23 15:32:54 +01:00
cgroup.cc Clean up cgroup handling in getMaxCPU() 2022-12-02 12:59:13 +01:00
cgroup.hh Clean up cgroup handling in getMaxCPU() 2022-12-02 12:59:13 +01:00
chunked-vector.hh Fix the darwin build 2022-04-22 10:56:56 +02:00
closure.hh Extract a generic computeClosure function 2021-05-19 11:44:58 +02:00
comparator.hh Recursively substitute the realisations 2021-05-26 18:44:17 +02:00
compression.cc Get rid of std::shared_ptr<std::string> and ref<std::string> 2022-01-18 11:12:30 +01:00
compression.hh Get rid of std::shared_ptr<std::string> and ref<std::string> 2022-01-18 11:12:30 +01:00
compute-levels.cc Add x86_64 compute levels as additional system types 2021-02-22 09:11:15 +01:00
compute-levels.hh Add x86_64 compute levels as additional system types 2021-02-22 09:11:15 +01:00
config.cc Fix handling of experimental features mid-parse 2023-03-20 11:35:34 -04:00
config.hh Mark experimental features on settings 2023-03-20 11:06:40 -04:00
error.cc Revert "Revert "Merge pull request #6204 from layus/coerce-string"" 2023-01-19 13:23:04 +01:00
error.hh Fix 'destructor called on non-final ...' warning 2023-01-24 16:37:50 +01:00
experimental-features.cc unsafeDiscardReferences 2023-01-03 17:19:16 +01:00
experimental-features.hh unsafeDiscardReferences 2023-01-03 17:19:16 +01:00
filesystem.cc Remove FormatOrString and remaining uses of format() 2023-03-02 15:57:54 +01:00
finally.hh make Finally more local 2022-03-09 00:16:50 +01:00
fmt.hh Remove FormatOrString and remaining uses of format() 2023-03-02 15:57:54 +01:00
git.cc Fix the parsing of the sourcehut refs file 2022-05-04 14:38:59 +02:00
git.hh Fix the parsing of the sourcehut refs file 2022-05-04 14:38:59 +02:00
hash.cc don't assume that rev is a SHA1 hash 2022-04-07 19:49:47 +02:00
hash.hh don't assume that rev is a SHA1 hash 2022-04-07 19:49:47 +02:00
hilite.cc Fix incorrect comment in hiliteMatches 2022-06-05 20:30:18 +02:00
hilite.hh Move hiliteMatches into a separate header 2022-04-21 12:06:29 +02:00
json-impls.hh Remove default constructor from OutputsSpec 2023-01-11 19:08:19 -05:00
json-utils.hh Move json stuff out of util.cc 2022-05-04 11:22:06 +02:00
local.mk Remove the explicit c++fs linkage on darwin 2022-08-08 14:34:22 +02:00
logging.cc Remove FormatOrString and remaining uses of format() 2023-03-02 15:57:54 +01:00
logging.hh Remove FormatOrString and remaining uses of format() 2023-03-02 15:57:54 +01:00
lru-cache.hh Missing #include <cassert> in lru-cache.hh (#3654) 2020-06-03 10:15:22 +00:00
monitor-fd.hh MonitorFdHup: Make it work on macOS again 2023-01-11 10:48:40 -08:00
namespaces.cc Simplify the PID namespace check: just try to mount /proc 2023-02-10 14:38:14 +01:00
namespaces.hh Simplify the PID namespace check: just try to mount /proc 2023-02-10 14:38:14 +01:00
pool.hh
ref.hh Trivial changes from the lazy-trees branch 2022-12-07 14:06:34 +01:00
regex-combinators.hh Test store paths, with property tests 2023-01-23 07:05:50 -05:00
serialise.cc Revert "Disable GC during coroutine execution + test" 2023-03-08 20:47:52 +01:00
serialise.hh Revert "Disable GC during coroutine execution + test" 2023-03-08 20:47:52 +01:00
split.hh Typo 2020-09-17 20:21:04 +02:00
suggestions.cc Implement operator<< for Suggestions 2022-03-07 10:09:10 +01:00
suggestions.hh Merge or-suggestions.hh into suggestions.hh 2022-03-07 17:49:02 +01:00
sync.hh
tarfile.cc tarfile: set directory mode to at least 0500, don't extract fflags 2022-11-01 16:01:38 +01:00
tarfile.hh Revert "TarArchive: Small refactoring" 2022-03-24 22:30:46 +01:00
thread-pool.cc Remove CPU locking 2021-12-22 15:56:25 +01:00
thread-pool.hh
topo-sort.hh Add missing #pragma once 2020-10-06 10:40:07 +02:00
types.hh Move ChunkedVector to its own header 2022-04-22 10:01:02 +02:00
url-parts.hh Allow empty path segments in urls 2022-04-08 16:09:49 +02:00
url.cc url: make percentEncode stricter, expose and unit test it 2023-02-27 15:30:00 +01:00
url.hh url: make percentEncode stricter, expose and unit test it 2023-02-27 15:30:00 +01:00
util.cc Simplify commonChildInit() 2023-03-14 18:58:12 +01:00
util.hh Fix handling of experimental features mid-parse 2023-03-20 11:35:34 -04:00
xml-writer.cc xml-writer: Remove std aliases 2022-02-25 16:13:02 +01:00
xml-writer.hh xml-writer: Remove std aliases 2022-02-25 16:13:02 +01:00