* Depends on #1832
* Closes#1844
* Adds errors to the Core pipeline
* Checks for no recursion in the GEB pipeline
* Checks for no polymorphism in the GEB pipeline
* Checks for no dynamic type in the GEB pipeline
* Checks for no IO in the GEB pipeline
* Checks for no unsupported builtins in the GEB pipeline
Print JuvixCore InfoTable in such a way that it can be parsed back by
the JuvixCore parser.
* Depends on PR #1832
* Depends on PR #1862
* Closes#1841
* Adds "JuvixCore print" tests which read the files from
Core/positive/*.jvc, print them, read them back and check if the
evaluation results are preserved.
---------
Co-authored-by: Jan Mas Rovira <janmasrovira@gmail.com>
* Depends on PR #1832
* Closes#1799
* Removes Backend.C.Translation.FromInternal
* Removes `foreign` and `compile` blocks
* Removes unused test files
* Removes the old C runtime
* Removes other dead code
* Depends on PR #1824
* Closes#1556
* Closes#1825
* Closes#1843
* Closes#1729
* Closes#1596
* Closes#1343
* Closes#1382
* Closes#1867
* Closes#1876
* Changes the `juvix compile` command to use the new pipeline.
* Removes the `juvix dev minic` command and the `BackendC` tests.
* Adds the `juvix eval` command.
* Fixes bugs in the Nat-to-integer conversion.
* Fixes bugs in the Internal-to-Core and Core-to-Core.Stripped
translations.
* Fixes bugs in the RemoveTypeArgs transformation.
* Fixes bugs in lambda-lifting (incorrect de Bruijn indices in the types
of added binders).
* Fixes several other bugs in the compilation pipeline.
* Adds a separate EtaExpandApps transformation to avoid quadratic
runtime in the Internal-to-Core translation due to repeated calls to
etaExpandApps.
* Changes Internal-to-Core to avoid generating matches on values which
don't have an inductive type.
---------
Co-authored-by: Paul Cadman <git@paulcadman.dev>
Co-authored-by: janmasrovira <janmasrovira@gmail.com>
This PR adds support for all recent changes in GEB introduced by:
- https://github.com/anoma/geb/pull/70
- Closes#1814
Summary:
- [x] Add LeftInj, RightIng, and Absurd types in GEB language
- [x] Fix FromCore translation for the new data types and minor code
styling issues.
- [x] Fix GEB-STLC type inference and checking
- [X] Add support for evaluating typed morphism "(typed ...)" in the Geb
repl and .geb files.
- [x] Simplify a bit the Geb parser
- [x] Fix `dev geb check` command
- [x] Type check files in `tests/Geb/positive`
After this PR, we should include interval location for Geb terms to
facility debugging type-checking errors.
This PR introduces an evaluator for the Geb STLC interface/fragment and
other related commands, including a REPL to interact with his backend.
-
https://github.com/anoma/geb/blob/mariari/binaries/src/specs/lambda.lisp
We have included a REPL and support for commands such as read and eval
here. Check out:
```
juvix dev geb --help
```
- [x] Add Geb evaluator with the two basic eval strategies.
- [x] Add quasi quoter: return morphisms from typed geb values.
- [x] Add type/object inference for morphisms.
- [x] All combined: morphisms-eval-to-morphisms
- [x] Parse and pretty printer Geb values (without quoting them)
- [x] Parse files containing Geb terms:
- [x] Saved in a .lisp file according to anoma/geb example (typed
object).
- [x] Store in a .geb file simple as simple lisp expression.
- [x] Add related commands to the CLI for `dev geb`:
- [x] Subcommand: eval
- [x] Subcommand: read
- [x] Subcommand: infer
- [x] Subcommand: repl
- [x] Subcommand: check
- [x] Minor changes `hom` by `!->` in the Geb prettyprinter
- [x] Add tests for:
- [x] New subcommand (smoke tests)
- [x] Eval
Issues to solve after merging this PR:
- Add location to Geb ast for proper error location.
- Add tests for all related subcommands, e.g. check, and infer.
- Check compilation from Core to Geb: (run inferObject with the type
provided by the core node).
- [x] Update the vs code-plugin to load Geb repl and eval.
(31994c8684)
Core transformations apply to the whole InfoTable, the REPL needs to
apply Core transformations to the single node that it compiles from the
user input string.
The solution in this commit is to:
1. Compile the input string as before to obtain a Core Node.
2. Add this Node to a copy of the Core InfoTable for the loaded file.
3. Apply the (CLI specified) Core transformations to this InfoTable.
4. Extract the (now transformed) Node from the InfoTable.
We can think of a way to improve this, maybe when we tackle allowing the
user to make new definitions in the REPL.
As soon as compilation of pattern matching is complete we should enable
some (all?) Core transformations by default.
Example:
At the moment we get the following result in the REPL:
```
juvix repl
...
Stdlib.Prelude> 1 + 1
suc (suc zero)
```
After this commit we can turn on `nat-to-int` transformation:
```
juvix repl -t nat-to-int
Stdlib.Prelude> 1 + 1
2
```
* Part of https://github.com/anoma/juvix/issues/1531
This PR:
- Closes#1647
It gives compilation errors for language features that require more
substantial support (recursion, polymorphism). The additional features
are to be implemented in future separate PRs.
* Adds a new target `geb` to the CLI command `juvix dev core compile`,
which produces a `*.geb` output file in the `.juvix-build` directory.
* Adds a few tests. These are not yet checked automatically because
there is no GEB evaluator; checking the `*.geb` output would be too
brittle.
- Fixes#1723
- It refactors parsing/scoping so that the scoper does not need to read
files or parse any module. Instead, the parser takes care of parsing all
the imported modules transitively.
Filepaths within a Loc must now be absolute or an error is thrown when
mkLoc is called. This Loc is used when displaying errors.
This commit uses imaginary absolute file paths in the Core repl and Asm
commands in the cases (parsing a single expression for example).
Before this fix, the `core {repl, read, eval}` and `asm` commands would
crash if it encountered an error when invoked with a relative path, or
in the case of a repl when parsing a single expression.
Filepaths within a `Loc` must now be absolute or an error is thrown when
`mkLoc` is called. This `Loc` is used when displaying errors.
This commit converts the Core evaluator filepath to an absolute path
before calling `mkLoc`.
Before this fix, the Core evaluator would crash if it encountered an
error instead of displaying the error if called on a relative path.
This PR adds some maintenance at different levels to the CI config, the
Make file, and formatting.
- Most of the actions used by the CI related to haskell, ormolu, hlint
and pre-commit have been updated because Github requires NodeJS 16. This
change removes all the old warnings related to nodeJs.
In the case of ormolu, the new version makes us format some files that
were not formatted before, similarly with hlint.
- The CI has been updated to use the latest version of the Smoke testing
framework, which introduced installation of the dependencies for Linux
(libicu66) and macOS (icu4c) in the CI. In the case of macOS, the CI
uses a binary for smoke. For Linux, we use stack to build smoke from the
source. The source here is in a fork of [the official Smoke
repo](https://github.com/SamirTalwar/smoke). Such includes some
features/changes that are not yet in the official repo.
- The Makefile runs the ormolu and hlint targets using as a path for the
binaries the environment variables ORMOLU and HLINT. Thus, export those
variables in your environment before running `make check,` `make format`
or `make hlint`. Otherwise, the Makefile will use the binaries provided
by `stack`.
Co-authored-by: Paul Cadman <git@paulcadman.dev>
This PR redefines the `html` command unifying our previous subcommands
for the HTML backend. You should use the command in the following way to
obtain the same results as before:
- `juvix html src.juvix` -> `juvix html src.juvix --only-source`
- `juvix dev doc src.juvix` -> `juvix html src.juvix`
- Other fixes here include the flag `--non-recursive`, which replaces
the previous behavior in that we now generate all the HTML recursively
by default.
- The flag `--no-print-metadata` is now called `--no-footer`
- Also, another change introduced by this PR is asset handling; for
example, with our canonical Juvix program,
the new output is organized as follows.
```
juvix html HelloWorld.juvix --only-source && tree html/
Copying assets files to test/html/assets
Writing HelloWorld.html
html/
├── assets
│ ├── css
│ │ ├── linuwial.css
│ │ ├── source-ayu-light.css
│ │ └── source-nord.css
│ ├── images
│ │ ├── tara-magicien.png
│ │ ├── tara-seating.svg
│ │ ├── tara-smiling.png
│ │ ├── tara-smiling.svg
│ │ ├── tara-teaching.png
│ │ └── tara-teaching.svg
│ └── js
│ ├── highlight.js
│ └── tex-chtml.js
└── HelloWorld.html
├── Stdlib.Data.Bool.html
├── Stdlib.Data.List.html
├── Stdlib.Data.Maybe.html
├── Stdlib.Data.Nat.html
├── Stdlib.Data.Ord.html
├── Stdlib.Data.Product.html
├── Stdlib.Data.String.html
├── Stdlib.Function.html
├── Stdlib.Prelude.html
└── Stdlib.System.IO.html
```
In addition, for the vscode-plugin, this PR adds two flags,
`--prefix-assets` and `--prefix-url`, for which one provides input to
help vscode find resource locations and Juvix files.
PS. Make sure to run `make clean` the first time you run `make install`
for the first time.
An implementation of the translation from JuvixCore to JuvixAsm. After
merging this PR, the only remaining step to complete the basic
compilation pipeline (#1556) is the compilation of complex pattern
matching (#1531).
* Fixes several bugs in lambda-lifting.
* Fixes several bugs in the RemoveTypeArgs transformation.
* Fixes several bugs in the TopEtaExpand transformation.
* Adds the ConvertBuiltinTypes transformation which converts the builtin
bool inductive type to Core primitive bool.
* Adds the `juvix dev core strip` command.
* Adds the `juvix dev core asm` command.
* Adds the `juvix dev core compile` command.
* Adds two groups of tests:
- JuvixCore to JuvixAsm translation: translate JuvixCore tests to
JuvixAsm and run the results with the JuvixAsm interpreter,
- JuvixCore compilation: compile JuvixCore tests to native code and WASM
and execute the results.
* Closes#1520
* Closes#1549
* Add shelltests for `juvix repl`
* repl: Compute entrypoint root when loading a file
Previously the REPL would use app root (which could be the current
directory or the project root of the initially loaded file). Thus files
in a different project could not be loaded.
The entrypoint root must be computed each time a new file is `:load`ed.
Adds shell-tests for REPL commands
* Move preludePath to Juvix.Extra.Paths
* Adds a major mode for juvix-repl
* juvix-mode: C-c C-l loads file into REPL, if the REPL is running
* Detect ANSI support in Emacs REPL / shell by using hSupportsANSIColor API
* Disable comint echo handling. Juvix REPL does not echo
* repl: whitespace strip input to compile/eval/infer commands
* REPL support reloading
* Reformat :help and add :version command
* repl: Display the currently loaded module in the banner
* repl: Load the Prelude at launch unless --no-prelude or --no-stdlib are set
* Remove ParserParams
ParserParams is only used to record the root of the project, which is
used to prefix source file paths. However source file paths are always
absolute so this is not required.
* Add GetAbsPath to Files effect
The Files effect is not responsible for resolving a relative module
path into an absolute path on disk. This will allow us to resolve
relative module paths to alternative paths, for example to point to the
standard library on disk.
* Files effect getAbsPath returns paths within the registered standard
library
This means that the standard library can exist on disk at a different
location to the Juvix project.
A command line flag --stdlib-path can be specified to point to a
standard library, otherwise the embedded standard library is written to
disk at $PROJ_DIR/.juvix-build/stdlib and this is used instead.
* Recreate stdlib dir only when juvix version changes
* Add UpdateStdlib to the Files effect
* Add comment for stdlibOrFile
* Remove spurious import
* Export all functions with alphanum names in entrypoint
Set the export_name attribute on every function signature that has a
fully alpha numeric name.
* Adds a non-WASI target to compile command
WASM libraries we want to run in the browser and in Anoma VM do not have
access to the WASI runtime. For this usecase we need a target runtime
that does not use the WASI runtime.
A `wasi-` prefix is added to existing compile targets and introduce a new
standalone target. This target does not have IO functions like
`putStrLn` and `exit` calls `__builtin_trap` which corresponds to the
`unreachable` WASM instruction.
In the non-exhaustive case error a debug message is emitted to tell the
user which function had the error. This is now abstracted to a `debug`
function in the runtime which calls `putStrLn` in the case of WASI and
is no-op in the case of non-WASI.
Tests are added which check that exported names can be called with the
correct name and result.
* Moves walloc to a common directory
* w.i.p
* Added strict positivity condition for datatypes w.i.p
* Add negative test for str.postivity check
* Add some revisions
* the branch is back to feet
* w.i.p add lots of traces to check alg.
* Add more test and revisions
* Add negative and positive test to the new flag and the keyword
* Fix shell tests.
* Make pre-commit happy
* Fix rebase conflicts
* Make pre-commit happy
* Add shell test, rename keyword, fix error msg
* Revert change
* Necessary changes
* Remove wrong unless
* Move the positivity checker to its own folder
* Add missing juvix.yaml
* Add a negative test thanks to jan
* make some style changes
* Make ormolu happy
* Remove unnecessary instance of Show
Co-authored-by: Jan Mas Rovira <janmasrovira@gmail.com>
* Renaming MiniJuvix to Juvix
* Make Ormolu happy
* Make Hlint happy
* Remove redundant imports
* Fix shell tests and add target ci to our Makefile
* Make pre-commit happy
* Embed stdlib in minijuvix library
We add a new step at the beginning of the pipeline called Setup that
registers the modules in the standard library with the Files effect. The
standard library is then used when the Scoper queries the Files effect
for modules as it resolves import statements.
Use of the standard library can be disabled using the global
`--no-stdlib` command-line option.
* CI: Checkout submodules recursively for stdlib
* Add a new `--no-stdlib` option to shell check
* Poke CI
* CI: Checkout submodules in the test job
* match inductive definitions
* progress towards builtins
* more progress towards builtin types
* add more builtins
* add some errors
* add reverse table to builtins
* Squashed commit of the following:
commit 93333de502d8dd546eb8edf697ca7eef972ea105
Author: Paul Cadman <git@paulcadman.dev>
Date: Mon Jun 27 18:21:30 2022 +0100
Use builtin names for match and project functions
Add an implementation of nat for the standalone backend
commit 868d2098ee57b7acbca84512b6e096650eeeb22d
Author: Jan Mas Rovira <janmasrovira@gmail.com>
Date: Mon Jun 27 18:15:29 2022 +0200
add builtin information to ClosureInfo
commit 32c78aceb19ee4010d66090a3c4e6025621b5c1f
Author: Paul Cadman <git@paulcadman.dev>
Date: Mon Jun 27 12:52:10 2022 +0100
Refactor BuiltinEnum to sum type of each Builtin
commit 55bb72ab12a8fb7d10070c2dee5875482453b7c6
Author: Paul Cadman <git@paulcadman.dev>
Date: Fri Jun 24 14:44:28 2022 +0100
Add Builtin information to Mono InfoTable
commit a72368f2e3af20baaf44c5e21fa7e6a469cf1ac5
Author: Paul Cadman <git@paulcadman.dev>
Date: Fri Jun 24 14:41:51 2022 +0100
Add Bitraversable to Prelude
commit afa3153d82a9509b0882e7ca99830040fad9ef65
Author: Paul Cadman <git@paulcadman.dev>
Date: Fri Jun 24 14:41:39 2022 +0100
Remove unused import
commit ea0b7848fb80970e03a0561be3fb4448486a89a9
Author: Paul Cadman <git@paulcadman.dev>
Date: Thu Jun 23 13:54:58 2022 +0100
Use projection functions instead of direct member access
* Avoid shadowing C runtime names in foreign block
* Fix formatting
* Update C names for builtin functions
* Add prim_ prefix to builtin C names
Implement builtins for standalone and libc backends
* Update ormolu action
* ci: run all tests for draft PRs
Co-authored-by: Paul Cadman <git@paulcadman.dev>
* work in progress towards implicit arguments
* Wip towards implicit types
* improve arity checker
* Add version of SimpleFungibleToken with implicit arguments
* guess arity of body before checking the lhs of a clause
* add ArityUnknown and fix some tests
* wip: proper errors in arity checker
* fix bugs, improve errors and add tests
* format
* set hlint version to 3.4 in the ci
* update pre-commit version to 3.0.0
* minor changes
* added more revisions
* minor
Co-authored-by: Jonathan Cubides <jonathan.cubides@uib.no>
* Remove input file fields from command opts
* [cli] Make version and help commands
* Fix on reviews
* Fixes for dealing with global options inside subcmds
* Fix minijuvix emacs mode and add some instance to GlobalOpts
* Remove unrelated code
* Propagate globals opts in each cmd parser
* Add initial shell tests
* Add test-shell to makefile and CI
* Fix CI: adding .local/bin to PATH
* Fixing CI
* Installing shelltest just before running it
* Install app for shell testing
* Hide global flags after cmd. Fix shell tests accordingly.
* Fixing CI
* Shell test only run on ubuntu for now
* [app] Add compile command
The compile command drives the (external) clang compiler to build a WASM
binary from a minijuvix file.
The intermediate C files are stored in .minijuvix-build directory
relative to the directory where the command is executed.
The user can specify which runtime (standalone and libc) to build
against.
The file-embed library is used to embed the runtime files into the
minijuvix binary.
* TemplateHaskell is a default extension
* [app] Add the .minijuvix-build dir in the root of the project
* [app] Derive the default output filename from the inputfile
* [chore] Add .minijuvix-build to .gitignore
* [WIP] EntryPoint now has options. --no-termination is a new global opt.
* Add TerminationChecking to the pipeline
* Add TerminationChecking to the pipeline
* Keep GlobalOptions in App
* Fix reviewer's comments
* delete unnecessary parens
Co-authored-by: Jan Mas Rovira <janmasrovira@gmail.com>
* w.i.p adoption of generic error type
* harmonize
* Remove the use of Error effect for internal bugs
* add location information to expression atom list
* Add GenericError instance for PatternAtoms
* Remove Maybe GenericError occurrences
* [ci] fix draft job's condition
* minor changes
* [stack] macos support ghc-opts
* Fix reviewer's comments
* remove accidentally commited file
* refactor to avoid duplication
* fix
Co-authored-by: Jan Mas Rovira <janmasrovira@gmail.com>
* add face and handling of not in scope symbol error
* small fix
* generic errors wip
* add App effect
* format
* add flycheck-minijuvix
* use absolute paths and refactor
* fix dir0
* add generic error instances and improve some errors
* format
* qualify strings
* use AnsiText
* add ToGenericError instances for the type checker errors
* improve error message
* improve handling of parsing errors
* [cbackend] Adds an AST for C
This should cover enough C to implement the microjuvix backend.
* [cbackend] Add C serializer using language-c library
We may decide to write our own serializer for the C AST but this
demonstrates that the C AST is sufficient at least.
* [cbackend] Declarations will always be typed
* [cbackend] Add CPP support to AST
* [cbackend] Rename some names for clarity
* [cbackend] Add translation of InductiveDef to C
* [cbackend] Add CLI for C backend
* [cbackend] Add stdbool.h to file header
* [cbackend] Allow Cpp and Verbatim code inline
* [cbackend] Add a newline after printing C
* [cbackend] Support foreign blocks
* [cbackend] Add support for axioms
* [cbackend] Remove code examples
* [cbackend] wip FunctionDef including Expressions
* [parser] Support esacping '}' inside a foreign block
* [cbackend] Add support for patterns in functions
* [cbackend] Add foreign C support to HelloWorld.mjuvix
* hlint fixes
* More hlint fixes not picked up by pre-commit
* [cbackend] Remove CompileStatement from MonoJuvix
* [cbackend] Add support for compile blocks
* [cbackend] Move compileInfo extraction to MonoJuvixResult
* [minihaskell] Fix compile block support
* [chore] Remove ununsed isBackendSupported function
* [chore] Remove unused imports
* [cbackend] Use a Reader for pattern bindings
* [cbackend] Fix compiler warnings
* [cbackend] Add support for nested patterns
* [cbackend] Use functions to instantiate argument names
* [cbackend] Add non-exhaustive pattern error message
* [cbackend] Adds test for c to WASM compile and execution
* [cbackend] Add links to test dependencies in quickstart
* [cbackend] Add test with inductive types and patterns
* [cbackend] Fix indentation
* [cbackend] Remove ExpressionTyped case
https://github.com/heliaxdev/minijuvix/issues/79
* [lexer] Fix lexing of \ inside a foreign block
* [cbackend] PR review fixes
* [chore] Remove unused import
* [cbackend] Rename CJuvix to MiniC
* [cbackend] Rename MonoJuvixToC to MonoJuvixToMiniC
* [cbackend] Add test for polymorphic function
* [cbackend] Add module for string literals
* Parsing terminating keyword
* cosmetics
* Add support for `terminating` keyword to function decl.
* Minor replacement
* Fix .mjuxix to .mjuvix and the module name
* add TypeCallsBuilder and others
* implement propagation of type calls
* improve type propagation
* polymorphize fungible token
* sort type calls map pretty output
* use HashSet in TypeCallsMap
* renaming
* rename module
* improve indexing in type propagation
* draft monomorphization generation algorithm
* fix draft
* wip mono code generation
* wip code generation
* finish first candidate for code generation
* add monojuvix command
* fix MonoJuvix pretty printer to properly display name ids
* [monojuvix] improve clause pretty printing
* add support for function types in expressions
* properly translate function expressions
* ormolu
* add a basic positive test for monomorphization
* cleanup effect constraints
* collect type applications in axiom types
* apply some style improvements
* fix PolySimpleFungibleToken and add it to the test suite
* ignore polymorphic inductive definitions that are never used
This adds `ansi-terminal` dependency to the Main target but this is
already a transitive dependency of `prettyprinter-ansi-terminal`.
We want to add this support globally which we will do in https://github.com/heliaxdev/minijuvix/issues/38.
* [ format ] AbstractToMicroJuvix
* [ CI ] fixes
* [ CI ] fixes
* [ CI ] Using GHC 9.0 for Hlint
* [ CI ] Use static-checks for Dev as well
* [app] Add action hints for autocompletion
Using `action "file"` means that the autocompletion for that part of the
command will prompt the user with a list of files.
Without these action hints the user would have to type out the whole
path to the file without autocompletion assistance.
Co-authored-by: Jonathan Prieto-Cubides <jonathan.cubides@uib.no>
* add references to the syntax and cleanup code
* [make] add .PHONY to Makefile targets
* [parser] add parser / pretty for axiom backends
* Pairing progress
* [scoper] Add support for Axiom backends
* [parser] Fix foreign block parsing
* [ app ] adds --no-colors flag for the scope command
* [ghc] upgrade to ghc 9.2.2
* use GHC2021
* [doc] Remove out-of-date comment
* [test] Add ambiguity tests
* [scoper] Improve resolution of local symbols
* [error] WIP improving ambiguity error messages
* [ clean-up ] new lab folder for experimentation
* [ app ] ixes the lint warning
* [ Termination ] removes Alga dependency
* [error] Add message for ambiguous symbol error
* [error] Add ambiguous module message
* [scoper] Remove ErrGeneric
* [test] Add test to suite
* [test] show diff when ast's are different
* [ lab ] folder organization
* [ Makefile ] add targets with --watch option (stack cmds) and remove unused things
* [ app ] add --version flag and fixed warnings and formatting
* [test] remove fromRightIO to fix ambiguity error
* [test] Add test of shadowing public open
* [scoper] Add visibility annotation for Name
* prepare buildIntoTable
* [ Concrete ] add instance of hashable for refs.
* add InfoTableBuilder effect
* [ scoper ] add InfoTableBuilder effect
* [ CHANGELOG ] updated v0.1.1
* [ README ] org version now
* fix package.yaml
* fix readme
* [microjuvix] implement basic typechecker
* add simple test for MicroJuvix type checker
* fix checking for constructors apps in patterns
* [scope] Move InfoTable to a new module
* [abstract] Make Iden use references instead of Name
* [abstract] Add InfoTable for abstract syntax
* [scoper] Add function clauses to scoped InfoTable
* [abstract] Add InfoTableBuilder for scoped to abstract
* [main] Fix callsites of translateModule
* [doc] Remove empty docs
* [scoper] Update emptyInfoTable with missing field
* rename some functions
* [minihaskell] add compilation to MiniHaskell
* [microjuvix] improve wrong type message
* Add a validity predicate example written in MiniJuvix
* [typecheck] Add error infrastructure for type errors
Add a pretty error for mismatched constructor type in a pattern match
* [test] Adds negative typecheck test for constructor
* [app] Adds microjuvix subcommands for printing / typechecking
* [typecheck] Add error message for ctor match args mistmatch
* [typecheck] Add descriptive messages for remainng errors
* [typecheck] Updates to error message copy
* [typecheck] fix merge conflicts:
* [highlight] add basic support for highlighting symbols
* [minijuvix-mode] add minijuvix-mode and basic description in the readme
* [readme] improve formatting
* automatically detect the root of the project and add --show-root flag
Co-authored-by: Jan Mas Rovira <janmasrovira@gmail.com>
Co-authored-by: Paul Cadman <git@paulcadman.dev>
Co-authored-by: Paul Cadman <pcadman@gmail.com>
