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Make 'nix dev-shell' a deprecated alias for 'nix develop'

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This commit is contained in:
Eelco Dolstra 2020-06-04 11:14:19 +02:00
parent 61e3d598b6
commit 0f44b60e6d
4 changed files with 13 additions and 5 deletions
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11
src/libutil/args.cc
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@ -217,10 +217,15 @@ MultiCommand::MultiCommand(const Commands & commands)
{ {
expectedArgs.push_back(ExpectedArg{"command", 1, true, [=](std::vector<std::string> ss) { expectedArgs.push_back(ExpectedArg{"command", 1, true, [=](std::vector<std::string> ss) {
assert(!command); assert(!command);
auto i = commands.find(ss[0]); auto cmd = ss[0];
if (auto alias = get(deprecatedAliases, cmd)) {
warn("'%s' is a deprecated alias for '%s'", cmd, *alias);
cmd = *alias;
}
auto i = commands.find(cmd);
if (i == commands.end()) if (i == commands.end())
throw UsageError("'%s' is not a recognised command", ss[0]); throw UsageError("'%s' is not a recognised command", cmd);
command = {ss[0], i->second()}; command = {cmd, i->second()};
}}); }});
categories[Command::catDefault] = "Available commands"; categories[Command::catDefault] = "Available commands";

2
src/libutil/args.hh
View file

@ -234,6 +234,8 @@ public:
std::map<Command::Category, std::string> categories; std::map<Command::Category, std::string> categories;
std::map<std::string, std::string> deprecatedAliases;
// Selected command, if any. // Selected command, if any.
std::optional<std::pair<std::string, ref<Command>>> command; std::optional<std::pair<std::string, ref<Command>>> command;

3
src/libutil/util.hh
View file

@ -459,8 +459,7 @@ string base64Encode(const string & s);
string base64Decode(const string & s); string base64Decode(const string & s);
/* Get a value for the specified key from an associate container, or a /* Get a value for the specified key from an associate container. */
default value if the key doesn't exist. */
template <class T> template <class T>
std::optional<typename T::mapped_type> get(const T & map, const typename T::key_type & key) std::optional<typename T::mapped_type> get(const T & map, const typename T::key_type & key)
{ {

2
src/nix/main.cc
View file

@ -110,6 +110,8 @@ struct NixArgs : virtual MultiCommand, virtual MixCommonArgs
.description = "consider all previously downloaded files out-of-date", .description = "consider all previously downloaded files out-of-date",
.handler = {[&]() { refresh = true; }}, .handler = {[&]() { refresh = true; }},
}); });
deprecatedAliases.insert({"dev-shell", "develop"});
} }
void printFlags(std::ostream & out) override void printFlags(std::ostream & out) override